#------------------------------------------------------------------------------
#$Date: 2022-10-22 03:16:08 +0300 (Sat, 22 Oct 2022) $
#$Revision: 278720 $
#$URL: file:///home/coder/svn-repositories/cod/cif/7/15/89/7158948.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_7158948
loop_
_publ_author_name
'Maniarasu, Meenakshi'
'Kannupal, Srinivasan'
_publ_section_title
;
 SnCl4-Mediated One-Pot Synthesis of 2,4,5-Trisubstituted Thiazoles from
 Nitro-Substituted Donor-Acceptor Cyclopropanes and Thioamides
;
_journal_name_full               'Organic & Biomolecular Chemistry'
_journal_paper_doi               10.1039/D2OB01604D
_journal_year                    2022
_chemical_formula_sum            'C23 H23 N O5 S'
_chemical_formula_weight         425.48
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_block_doi                 10.5517/ccdc.csd.cc2cx9p9
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2022-08-17 deposited with the CCDC.	2022-10-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.509(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7261(9)
_cell_length_b                   26.408(3)
_cell_length_c                   8.5437(7)
_cell_measurement_reflns_used    7611
_cell_measurement_temperature    300(2)
_cell_measurement_theta_max      27.09
_cell_measurement_theta_min      3.09
_cell_volume                     2193.7(4)
_computing_cell_refinement       'APEX3/SAINT (Bruker, 2016)'
_computing_data_collection       'APEX3(Bruker, 2016)'
_computing_data_reduction        'SAINT/XPREP (Bruker, 2016)'
_computing_molecular_graphics
'ORTEP3 (Farrugia, 1997) and Mercury (Bruno et al., 2002)'
_computing_publication_material  'SHELXL-2018/2 (Sheldrick, 2018)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      300(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
'Bruker axs kappa apex3 PHOTON II Diffractometer'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1746
_diffrn_reflns_av_unetI/netI     0.0533
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -31
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            70221
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        24.996
_diffrn_reflns_theta_max         24.996
_diffrn_reflns_theta_min         2.602
_diffrn_source                   'fine focus sealed tube'
_exptl_absorpt_coefficient_mu    0.181
_exptl_absorpt_correction_T_max  0.745
_exptl_absorpt_correction_T_min  0.658
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker 2016'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.288
_exptl_crystal_description       block
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.153
_exptl_crystal_size_mid          0.063
_exptl_crystal_size_min          0.051
_refine_diff_density_max         0.226
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.152
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         3859
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.153
_refine_ls_R_factor_all          0.1295
_refine_ls_R_factor_gt           0.0924
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[σ²(Fo²)+(0.0679P)²+3.3812P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1849
_refine_ls_wR_factor_ref         0.2053
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2802
_reflns_number_total             3859
_reflns_threshold_expression     'I > 2σ(I)'
_cod_data_source_file            d2ob01604d2.cif
_cod_data_source_block           shelx
_cod_original_cell_volume        2193.7(3)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7158948
_shelx_shelxl_version_number     2018/3
_shelx_space_group_comment
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;
_shelx_estimated_absorpt_t_min   0.973
_shelx_estimated_absorpt_t_max   0.991
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y-1/2, z-1/2'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
C1 C 0.8927(5) 0.66563(19) 1.0484(6) 0.0492(12) Uani 1 1 d . . . . .
C2 C 0.7735(5) 0.69071(19) 1.0043(6) 0.0504(13) Uani 1 1 d . . . . .
H2 H 0.737381 0.715362 1.069251 0.061 Uiso 1 1 calc R U . . .
C3 C 0.7077(5) 0.67911(19) 0.8636(6) 0.0522(13) Uani 1 1 d . . . . .
H3 H 0.627564 0.696250 0.834434 0.063 Uiso 1 1 calc R U . . .
C4 C 0.7591(5) 0.64240(17) 0.7652(5) 0.0414(11) Uani 1 1 d . . . . .
C5 C 0.8797(5) 0.61771(19) 0.8109(6) 0.0510(13) Uani 1 1 d . . . . .
H5 H 0.916582 0.593247 0.745936 0.061 Uiso 1 1 calc R U . . .
C6 C 0.9446(5) 0.6290(2) 0.9505(6) 0.0563(14) Uani 1 1 d . . . . .
H6 H 1.024691 0.611802 0.979895 0.068 Uiso 1 1 calc R U . . .
C7 C 0.9093(7) 0.7063(3) 1.2973(7) 0.086(2) Uani 1 1 d . . . . .
H7A H 0.971252 0.708505 1.386444 0.128 Uiso 1 1 calc R U . . .
H7B H 0.896210 0.739429 1.252899 0.128 Uiso 1 1 calc R U . . .
H7C H 0.822468 0.693195 1.329443 0.128 Uiso 1 1 calc R U . . .
C8 C 0.6874(5) 0.62890(18) 0.6179(6) 0.0433(11) Uani 1 1 d . . . . .
C9 C 0.6325(4) 0.58501(16) 0.4050(5) 0.0388(10) Uani 1 1 d . . . . .
C10 C 0.5377(4) 0.62317(16) 0.3854(5) 0.0377(10) Uani 1 1 d . . . . .
C11 C 0.6494(4) 0.54109(16) 0.2984(5) 0.0380(11) Uani 1 1 d . . . . .
C12 C 0.6508(5) 0.49227(18) 0.3601(6) 0.0500(12) Uani 1 1 d . . . . .
H12 H 0.639672 0.487543 0.466895 0.060 Uiso 1 1 calc R U . . .
C13 C 0.6686(6) 0.4510(2) 0.2647(7) 0.0629(15) Uani 1 1 d . . . . .
H13 H 0.668401 0.418597 0.307231 0.075 Uiso 1 1 calc R U . . .
C14 C 0.6867(6) 0.4573(2) 0.1078(7) 0.0673(17) Uani 1 1 d . . . . .
H14 H 0.700662 0.429312 0.044162 0.081 Uiso 1 1 calc R U . . .
C15 C 0.6842(6) 0.5050(2) 0.0444(6) 0.0621(15) Uani 1 1 d . . . . .
H15 H 0.694653 0.509144 -0.062684 0.074 Uiso 1 1 calc R U . . .
C16 C 0.6663(5) 0.5469(2) 0.1384(6) 0.0500(12) Uani 1 1 d . . . . .
H16 H 0.665631 0.579109 0.094472 0.060 Uiso 1 1 calc R U . . .
C17 C 0.4232(4) 0.62696(16) 0.2650(5) 0.0374(10) Uani 1 1 d . . . . .
H17 H 0.432763 0.598808 0.191363 0.045 Uiso 1 1 calc R U . . .
C18 C 0.4232(5) 0.67624(17) 0.1714(5) 0.0441(11) Uani 1 1 d . . . . .
C19 C 0.3166(8) 0.7170(2) -0.0463(7) 0.085(2) Uani 1 1 d D . . . .
H19A H 0.277506 0.744226 0.014558 0.102 Uiso 1 1 calc R U . . .
H19B H 0.404873 0.728261 -0.083676 0.102 Uiso 1 1 calc R U . . .
C20 C 0.2265(8) 0.7051(3) -0.1768(9) 0.118(3) Uani 1 1 d D . . . .
H20A H 0.213996 0.734535 -0.241400 0.177 Uiso 1 1 calc R U . . .
H20B H 0.266078 0.678361 -0.237122 0.177 Uiso 1 1 calc R U . . .
H20C H 0.139069 0.694281 -0.139164 0.177 Uiso 1 1 calc R U . . .
C21 C 0.2840(4) 0.62209(18) 0.3405(5) 0.0387(10) Uani 1 1 d . . . . .
C22 C 0.0889(5) 0.5701(2) 0.3650(7) 0.0599(14) Uani 1 1 d . . . . .
H22A H 0.025386 0.597318 0.338390 0.072 Uiso 1 1 calc R U . . .
H22B H 0.097287 0.567637 0.478097 0.072 Uiso 1 1 calc R U . . .
C23 C 0.0393(6) 0.5213(2) 0.2963(9) 0.088(2) Uani 1 1 d . . . . .
H23A H -0.049185 0.513216 0.336956 0.131 Uiso 1 1 calc R U . . .
H23B H 0.031775 0.524345 0.184475 0.131 Uiso 1 1 calc R U . . .
H23C H 0.103291 0.494823 0.323433 0.131 Uiso 1 1 calc R U . . .
N1 N 0.7164(4) 0.58812(14) 0.5355(4) 0.0437(10) Uani 1 1 d . . . . .
O1 O 0.4917(4) 0.71285(13) 0.2022(4) 0.0633(10) Uani 1 1 d . . . . .
O2 O 0.3354(4) 0.67194(13) 0.0520(4) 0.0615(10) Uani 1 1 d . . . . .
O3 O 0.2390(4) 0.65297(15) 0.4276(4) 0.0631(10) Uani 1 1 d . . . . .
O4 O 0.2225(3) 0.57970(12) 0.2983(4) 0.0523(9) Uani 1 1 d . . . . .
O5 O 0.9654(4) 0.67375(15) 1.1842(4) 0.0682(11) Uani 1 1 d . . . . .
S1 S 0.55608(13) 0.66543(5) 0.53818(15) 0.0477(4) Uani 1 1 d . . . . .
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
S S 0.1246 0.1234 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
O5 C1 C2 124.9(5) . . ?
O5 C1 C6 115.9(5) . . ?
C2 C1 C6 119.2(5) . . ?
C1 C2 C3 119.8(5) . . ?
C1 C2 H2 120.1 . . ?
C3 C2 H2 120.1 . . ?
C2 C3 C4 121.2(5) . . ?
C2 C3 H3 119.4 . . ?
C4 C3 H3 119.4 . . ?
C3 C4 C5 118.2(4) . . ?
C3 C4 C8 121.3(4) . . ?
C5 C4 C8 120.4(4) . . ?
C6 C5 C4 120.7(5) . . ?
C6 C5 H5 119.6 . . ?
C4 C5 H5 119.6 . . ?
C5 C6 C1 120.8(5) . . ?
C5 C6 H6 119.6 . . ?
C1 C6 H6 119.6 . . ?
O5 C7 H7A 109.5 . . ?
O5 C7 H7B 109.5 . . ?
H7A C7 H7B 109.5 . . ?
O5 C7 H7C 109.5 . . ?
H7A C7 H7C 109.5 . . ?
H7B C7 H7C 109.5 . . ?
N1 C8 C4 123.5(4) . . ?
N1 C8 S1 114.3(3) . . ?
C4 C8 S1 122.2(4) . . ?
N1 C9 C10 116.1(4) . . ?
N1 C9 C11 118.3(4) . . ?
C10 C9 C11 125.6(4) . . ?
C9 C10 C17 128.1(4) . . ?
C9 C10 S1 109.1(3) . . ?
C17 C10 S1 122.5(3) . . ?
C16 C11 C12 118.3(4) . . ?
C16 C11 C9 122.3(4) . . ?
C12 C11 C9 119.4(4) . . ?
C13 C12 C11 120.6(5) . . ?
C13 C12 H12 119.7 . . ?
C11 C12 H12 119.7 . . ?
C14 C13 C12 120.4(5) . . ?
C14 C13 H13 119.8 . . ?
C12 C13 H13 119.8 . . ?
C13 C14 C15 119.9(5) . . ?
C13 C14 H14 120.1 . . ?
C15 C14 H14 120.1 . . ?
C14 C15 C16 120.5(5) . . ?
C14 C15 H15 119.7 . . ?
C16 C15 H15 119.7 . . ?
C15 C16 C11 120.2(5) . . ?
C15 C16 H16 119.9 . . ?
C11 C16 H16 119.9 . . ?
C10 C17 C21 110.9(4) . . ?
C10 C17 C18 113.9(4) . . ?
C21 C17 C18 107.8(4) . . ?
C10 C17 H17 108.0 . . ?
C21 C17 H17 108.0 . . ?
C18 C17 H17 108.0 . . ?
O1 C18 O2 125.7(4) . . ?
O1 C18 C17 125.4(5) . . ?
O2 C18 C17 108.8(4) . . ?
C20 C19 O2 109.3(5) . . ?
C20 C19 H19A 109.8 . . ?
O2 C19 H19A 109.8 . . ?
C20 C19 H19B 109.8 . . ?
O2 C19 H19B 109.8 . . ?
H19A C19 H19B 108.3 . . ?
C19 C20 H20A 109.5 . . ?
C19 C20 H20B 109.5 . . ?
H20A C20 H20B 109.5 . . ?
C19 C20 H20C 109.5 . . ?
H20A C20 H20C 109.5 . . ?
H20B C20 H20C 109.5 . . ?
O3 C21 O4 125.4(4) . . ?
O3 C21 C17 123.5(4) . . ?
O4 C21 C17 111.1(4) . . ?
O4 C22 C23 106.2(5) . . ?
O4 C22 H22A 110.5 . . ?
C23 C22 H22A 110.5 . . ?
O4 C22 H22B 110.5 . . ?
C23 C22 H22B 110.5 . . ?
H22A C22 H22B 108.7 . . ?
C22 C23 H23A 109.5 . . ?
C22 C23 H23B 109.5 . . ?
H23A C23 H23B 109.5 . . ?
C22 C23 H23C 109.5 . . ?
H23A C23 H23C 109.5 . . ?
H23B C23 H23C 109.5 . . ?
C8 N1 C9 110.6(4) . . ?
C18 O2 C19 116.2(4) . . ?
C21 O4 C22 116.4(4) . . ?
C1 O5 C7 118.6(5) . . ?
C10 S1 C8 89.9(2) . . ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
C1 O5 1.359(6) . ?
C1 C2 1.379(7) . ?
C1 C6 1.384(7) . ?
C2 C3 1.381(7) . ?
C2 H2 0.9300 . ?
C3 C4 1.385(7) . ?
C3 H3 0.9300 . ?
C4 C5 1.389(6) . ?
C4 C8 1.466(6) . ?
C5 C6 1.368(7) . ?
C5 H5 0.9300 . ?
C6 H6 0.9300 . ?
C7 O5 1.414(7) . ?
C7 H7A 0.9600 . ?
C7 H7B 0.9600 . ?
C7 H7C 0.9600 . ?
C8 N1 1.321(6) . ?
C8 S1 1.726(5) . ?
C9 N1 1.367(6) . ?
C9 C10 1.373(6) . ?
C9 C11 1.486(6) . ?
C10 C17 1.499(6) . ?
C10 S1 1.723(4) . ?
C11 C16 1.389(6) . ?
C11 C12 1.393(6) . ?
C12 C13 1.374(7) . ?
C12 H12 0.9300 . ?
C13 C14 1.367(8) . ?
C13 H13 0.9300 . ?
C14 C15 1.370(8) . ?
C14 H14 0.9300 . ?
C15 C16 1.381(7) . ?
C15 H15 0.9300 . ?
C16 H16 0.9300 . ?
C17 C21 1.520(6) . ?
C17 C18 1.528(6) . ?
C17 H17 0.9800 . ?
C18 O1 1.200(5) . ?
C18 O2 1.318(6) . ?
C19 C20 1.436(8) . ?
C19 O2 1.466(6) . ?
C19 H19A 0.9700 . ?
C19 H19B 0.9700 . ?
C20 H20A 0.9600 . ?
C20 H20B 0.9600 . ?
C20 H20C 0.9600 . ?
C21 O3 1.195(5) . ?
C21 O4 1.315(5) . ?
C22 O4 1.454(6) . ?
C22 C23 1.493(8) . ?
C22 H22A 0.9700 . ?
C22 H22B 0.9700 . ?
C23 H23A 0.9600 . ?
C23 H23B 0.9600 . ?
C23 H23C 0.9600 . ?
loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
_geom_hbond_site_symmetry_A
_geom_hbond_publ_flag
C19 H19B O1 0.97 2.56 3.338(8) 137.1 4_575 yes
C22 H22A O5 0.97 2.47 3.349(7) 150.3 1_454 yes
loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
O5 C1 C2 C3 -179.6(5) . . . . ?
C6 C1 C2 C3 -0.2(8) . . . . ?
C1 C2 C3 C4 0.3(8) . . . . ?
C2 C3 C4 C5 -0.6(8) . . . . ?
C2 C3 C4 C8 178.1(5) . . . . ?
C3 C4 C5 C6 0.8(8) . . . . ?
C8 C4 C5 C6 -177.9(5) . . . . ?
C4 C5 C6 C1 -0.8(8) . . . . ?
O5 C1 C6 C5 179.9(5) . . . . ?
C2 C1 C6 C5 0.4(8) . . . . ?
C3 C4 C8 N1 -166.5(5) . . . . ?
C5 C4 C8 N1 12.2(7) . . . . ?
C3 C4 C8 S1 13.2(7) . . . . ?
C5 C4 C8 S1 -168.1(4) . . . . ?
N1 C9 C10 C17 -172.6(4) . . . . ?
C11 C9 C10 C17 6.5(8) . . . . ?
N1 C9 C10 S1 0.6(5) . . . . ?
C11 C9 C10 S1 179.7(4) . . . . ?
N1 C9 C11 C16 -128.1(5) . . . . ?
C10 C9 C11 C16 52.8(7) . . . . ?
N1 C9 C11 C12 50.7(6) . . . . ?
C10 C9 C11 C12 -128.4(5) . . . . ?
C16 C11 C12 C13 0.0(7) . . . . ?
C9 C11 C12 C13 -178.9(5) . . . . ?
C11 C12 C13 C14 0.7(8) . . . . ?
C12 C13 C14 C15 -1.4(9) . . . . ?
C13 C14 C15 C16 1.3(9) . . . . ?
C14 C15 C16 C11 -0.6(8) . . . . ?
C12 C11 C16 C15 -0.1(7) . . . . ?
C9 C11 C16 C15 178.8(4) . . . . ?
C9 C10 C17 C21 111.4(5) . . . . ?
S1 C10 C17 C21 -61.0(5) . . . . ?
C9 C10 C17 C18 -126.7(5) . . . . ?
S1 C10 C17 C18 61.0(5) . . . . ?
C10 C17 C18 O1 -11.4(7) . . . . ?
C21 C17 C18 O1 112.2(5) . . . . ?
C10 C17 C18 O2 168.9(4) . . . . ?
C21 C17 C18 O2 -67.5(5) . . . . ?
C10 C17 C21 O3 67.3(6) . . . . ?
C18 C17 C21 O3 -58.1(6) . . . . ?
C10 C17 C21 O4 -112.0(4) . . . . ?
C18 C17 C21 O4 122.5(4) . . . . ?
C4 C8 N1 C9 179.5(4) . . . . ?
S1 C8 N1 C9 -0.3(5) . . . . ?
C10 C9 N1 C8 -0.2(6) . . . . ?
C11 C9 N1 C8 -179.4(4) . . . . ?
O1 C18 O2 C19 -2.9(8) . . . . ?
C17 C18 O2 C19 176.8(5) . . . . ?
C20 C19 O2 C18 175.7(6) . . . . ?
O3 C21 O4 C22 -0.3(7) . . . . ?
C17 C21 O4 C22 179.0(4) . . . . ?
C23 C22 O4 C21 178.3(5) . . . . ?
C2 C1 O5 C7 6.8(8) . . . . ?
C6 C1 O5 C7 -172.7(5) . . . . ?
C9 C10 S1 C8 -0.6(4) . . . . ?
C17 C10 S1 C8 173.1(4) . . . . ?
N1 C8 S1 C10 0.5(4) . . . . ?
C4 C8 S1 C10 -179.2(4) . . . . ?
