# Electronic Supplementary Material (ESI) for Dalton Transactions.
# This journal is © The Royal Society of Chemistry 2021

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
# 
#######################################################################

data_zn_sq_s
_database_code_depnum_ccdc_archive 'CCDC 2106760'
loop_
_audit_author_name
_audit_author_address
'Xueqin Song'
;Lanzhou Jiaotong University
China
;
_audit_update_record             
;
2021-09-01 deposited with the CCDC.	2021-10-04 downloaded from the CCDC.
;
_audit_creation_date             2021-04-15
_audit_creation_method           
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_shelx_SHELXL_version_number     2014/7
_chemical_name_common            ?
_chemical_name_systematic        ?
_chemical_formula_moiety         'C20 H10 N2 O8 Zn'
_chemical_formula_sum            'C20 H9 N2 O8 Zn'
_chemical_formula_weight         470.66
_chemical_melting_point          ?
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'
Zn Zn 0.2839 1.4301 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_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.
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_H-M_alt        'P 1 21/c 1'
_space_group_name_Hall           '-P 2ybc'
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'

_cell_length_a                   11.0213(5)
_cell_length_b                   17.0939(8)
_cell_length_c                   15.5201(7)
_cell_angle_alpha                90
_cell_angle_beta                 107.1320(10)
_cell_angle_gamma                90
_cell_volume                     2794.2(2)
_cell_formula_units_Z            4
_cell_measurement_reflns_used    8881
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.35
_cell_measurement_theta_min      2.27
_shelx_estimated_absorpt_T_max   ?
_shelx_estimated_absorpt_T_min   ?
_exptl_absorpt_coefficient_mu    0.915
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6238
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0886 before and 0.0667 after correction.
The Ratio of minimum to maximum transmission is 0.8369.
The λ/2 correction factor is Not present.
;
_exptl_absorpt_special_details   ?
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.119
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_description       block
_exptl_crystal_F_000             948
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_exptl_transmission_factor_max   ?
_exptl_transmission_factor_min   ?
_diffrn_reflns_av_R_equivalents  0.0943
_diffrn_reflns_av_unetI/netI     0.0550
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            36502
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.474
_diffrn_reflns_theta_min         2.271
_diffrn_ambient_temperature      99.99
_diffrn_detector_area_resol_mean ?
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_source                   ?
_diffrn_standards_number         0
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                4686
_reflns_number_total             5758
_reflns_special_details          
;
 Reflections were merged by SHELXL according to the crystal
 class for the calculation of statistics and refinement.
 
 Structure factors included contributions from the .fab file.
 
 _reflns_Friedel_fraction is defined as the number of unique
 Friedel pairs measured divided by the number that would be
 possible theoretically, ignoring centric projections and
 systematic absences.
;
_reflns_threshold_expression     'I > 2σ(I)'
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_collection       ?
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    ?
_refine_diff_density_max         0.730
_refine_diff_density_min         -0.788
_refine_diff_density_rms         0.113
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.097
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     320
_refine_ls_number_reflns         5758
_refine_ls_number_restraints     8
_refine_ls_R_factor_all          0.0778
_refine_ls_R_factor_gt           0.0644
_refine_ls_restrained_S_all      1.102
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0718P)²+13.4198P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1792
_refine_ls_wR_factor_ref         0.1858
_refine_special_details          ?
_olex2_refinement_description    
;
1. Restrained distances
 O8-H8
 0.85 with sigma of 0.02
 C18-H18
 0.95 with sigma of 0.02
2. Uiso/Uaniso restraints and constraints
Uanis(O8) \\sim Ueq: with sigma of 0.001 and sigma for terminal atoms of 0.002
;
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     ?
_atom_sites_solution_secondary   ?
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
Zn1 Zn 0.90973(5) 0.29350(3) 0.28771(3) 0.01604(17) Uani 1 1 d . . . . .
O1 O -0.1261(3) 0.3565(2) 0.5678(2) 0.0238(7) Uani 1 1 d . . . . .
H1 H -0.123(9) 0.389(6) 0.532(7) 0.10(3) Uiso 1 1 d . . . . .
O2 O -0.1746(3) 0.29038(19) 0.6778(2) 0.0216(7) Uani 1 1 d . . . . .
O3 O 0.0571(3) 0.12470(19) 0.8588(2) 0.0219(7) Uani 1 1 d . . . . .
O4 O 0.2383(3) 0.0694(2) 0.8491(3) 0.0297(8) Uani 1 1 d . . . . .
O5 O 0.5916(3) 0.4347(2) 0.2476(3) 0.0293(8) Uani 1 1 d . . . . .
O6 O 0.7762(3) 0.38621(19) 0.2363(2) 0.0234(7) Uani 1 1 d . . . . .
O7 O 0.9876(3) 0.19494(18) 0.3799(2) 0.0196(7) Uani 1 1 d . . . . .
O8 O 0.9349(4) 0.1141(2) 0.4761(3) 0.0314(8) Uani 1 1 d D U . . .
N1 N 0.0351(3) 0.2091(2) 0.7154(2) 0.0154(7) Uani 1 1 d . . . . .
N2 N 0.7828(3) 0.2783(2) 0.3565(3) 0.0164(7) Uani 1 1 d . . . . .
C1 C -0.1059(4) 0.3067(2) 0.6273(3) 0.0168(9) Uani 1 1 d . . . . .
C2 C 0.0168(4) 0.2579(2) 0.6453(3) 0.0155(8) Uani 1 1 d . . . . .
C3 C 0.1024(4) 0.2644(3) 0.5970(3) 0.0166(9) Uani 1 1 d . . . . .
H3 H 0.089(8) 0.305(5) 0.542(6) 0.07(3) Uiso 1 1 d . . . . .
C4 C 0.2127(4) 0.2182(3) 0.6224(3) 0.0174(9) Uani 1 1 d . . . . .
C5 C 0.2292(4) 0.1665(3) 0.6955(3) 0.0191(9) Uani 1 1 d . . . . .
H5 H 0.295(5) 0.133(3) 0.711(3) 0.011(11) Uiso 1 1 d . . . . .
C6 C 0.1387(4) 0.1646(3) 0.7413(3) 0.0174(9) Uani 1 1 d . . . . .
C7 C 0.1455(4) 0.1144(3) 0.8228(3) 0.0202(9) Uani 1 1 d . . . . .
C8 C 0.3112(4) 0.2241(3) 0.5746(3) 0.0183(9) Uani 1 1 d . . . . .
C9 C 0.2791(4) 0.2462(3) 0.4842(3) 0.0223(10) Uani 1 1 d . . . . .
H9 H 0.183(6) 0.257(4) 0.451(4) 0.047(18) Uiso 1 1 d . . . . .
C10 C 0.3728(4) 0.2551(3) 0.4408(3) 0.0230(10) Uani 1 1 d . . . . .
H10 H 0.347(5) 0.268(3) 0.368(3) 0.017(12) Uiso 1 1 d . . . . .
C11 C 0.5001(4) 0.2409(3) 0.4876(3) 0.0186(9) Uani 1 1 d . . . . .
C12 C 0.5328(5) 0.2188(3) 0.5772(4) 0.0272(11) Uani 1 1 d . . . . .
H12 H 0.623(6) 0.212(3) 0.612(4) 0.032(15) Uiso 1 1 d . . . . .
C13 C 0.4380(5) 0.2099(3) 0.6197(4) 0.0291(11) Uani 1 1 d . . . . .
H13 H 0.464(6) 0.205(4) 0.685(4) 0.037(16) Uiso 1 1 d . . . . .
C14 C 0.5983(4) 0.2536(3) 0.4412(3) 0.0185(9) Uani 1 1 d . . . . .
C15 C 0.5875(4) 0.3153(3) 0.3800(3) 0.0177(9) Uani 1 1 d . . . . .
H15 H 0.519(5) 0.347(3) 0.367(3) 0.012(11) Uiso 1 1 d . . . . .
C16 C 0.6819(4) 0.3256(2) 0.3387(3) 0.0150(8) Uani 1 1 d . . . . .
C17 C 0.6814(4) 0.3895(3) 0.2680(3) 0.0216(10) Uani 1 1 d . . . . .
C18 C 0.7049(4) 0.2056(3) 0.4582(3) 0.0190(9) Uani 1 1 d D . . . .
H18 H 0.715(6) 0.166(3) 0.501(4) 0.051(19) Uiso 1 1 d D . . . .
C19 C 0.7956(4) 0.2198(2) 0.4150(3) 0.0175(9) Uani 1 1 d . . . . .
C20 C 0.9155(4) 0.1712(3) 0.4259(3) 0.0189(9) Uani 1 1 d . . . . .
H8 H 1.004(12) 0.097(13) 0.469(16) 0.33(12) Uiso 1 1 d D . . . .


_geom_special_details            
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
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
Zn1 O2 2.213(3) 4_665 ?
Zn1 O3 2.181(3) 4_665 ?
Zn1 O6 2.150(3) . ?
Zn1 O7 2.213(3) . ?
Zn1 N1 2.022(3) 4_665 ?
Zn1 N2 2.011(4) . ?
O1 C1 1.228(6) . ?
O2 Zn1 2.213(3) 4_466 ?
O2 C1 1.271(5) . ?
O3 Zn1 2.181(3) 4_466 ?
O3 C7 1.270(5) . ?
O4 C7 1.249(6) . ?
O5 C17 1.221(6) . ?
O6 C17 1.280(5) . ?
O7 C20 1.281(5) . ?
O8 C20 1.227(6) . ?
N1 Zn1 2.022(3) 4_466 ?
N1 C2 1.338(6) . ?
N1 C6 1.332(6) . ?
N2 C16 1.336(6) . ?
N2 C19 1.331(6) . ?
C1 C2 1.542(6) . ?
C2 C3 1.371(6) . ?
C3 C4 1.405(6) . ?
C4 C5 1.407(6) . ?
C4 C8 1.487(6) . ?
C5 C6 1.385(6) . ?
C6 C7 1.511(6) . ?
C8 C9 1.395(6) . ?
C8 C13 1.388(7) . ?
C9 C10 1.397(6) . ?
C10 C11 1.399(7) . ?
C11 C12 1.382(7) . ?
C11 C14 1.482(6) . ?
C12 C13 1.400(7) . ?
C14 C15 1.401(6) . ?
C14 C18 1.393(6) . ?
C15 C16 1.385(6) . ?
C16 C17 1.547(6) . ?
C18 C19 1.378(6) . ?
C19 C20 1.527(6) . ?

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
O2 Zn1 O7 90.00(13) 4_665 . ?
O3 Zn1 O2 152.47(11) 4_665 4_665 ?
O3 Zn1 O7 94.12(12) 4_665 . ?
O6 Zn1 O2 96.05(13) . 4_665 ?
O6 Zn1 O3 92.38(13) . 4_665 ?
O6 Zn1 O7 153.33(11) . . ?
N1 Zn1 O2 75.99(13) 4_665 4_665 ?
N1 Zn1 O3 76.48(13) 4_665 4_665 ?
N1 Zn1 O6 108.40(13) 4_665 . ?
N1 Zn1 O7 98.28(13) 4_665 . ?
N2 Zn1 O2 97.23(13) . 4_665 ?
N2 Zn1 O3 110.18(13) . 4_665 ?
N2 Zn1 O6 77.58(13) . . ?
N2 Zn1 O7 75.89(13) . . ?
N2 Zn1 N1 171.21(14) . 4_665 ?
C1 O2 Zn1 115.2(3) . 4_466 ?
C7 O3 Zn1 114.8(3) . 4_466 ?
C17 O6 Zn1 115.9(3) . . ?
C20 O7 Zn1 114.6(3) . . ?
C2 N1 Zn1 120.1(3) . 4_466 ?
C6 N1 Zn1 119.0(3) . 4_466 ?
C6 N1 C2 120.8(4) . . ?
C16 N2 Zn1 118.5(3) . . ?
C19 N2 Zn1 120.6(3) . . ?
C19 N2 C16 120.8(4) . . ?
O1 C1 O2 127.4(4) . . ?
O1 C1 C2 117.8(4) . . ?
O2 C1 C2 114.8(4) . . ?
N1 C2 C1 113.5(3) . . ?
N1 C2 C3 122.0(4) . . ?
C3 C2 C1 124.5(4) . . ?
C2 C3 C4 118.7(4) . . ?
C3 C4 C5 118.3(4) . . ?
C3 C4 C8 121.4(4) . . ?
C5 C4 C8 120.3(4) . . ?
C6 C5 C4 119.1(4) . . ?
N1 C6 C5 121.0(4) . . ?
N1 C6 C7 113.8(4) . . ?
C5 C6 C7 125.3(4) . . ?
O3 C7 C6 115.8(4) . . ?
O4 C7 O3 127.0(4) . . ?
O4 C7 C6 117.2(4) . . ?
C9 C8 C4 121.0(4) . . ?
C13 C8 C4 120.7(4) . . ?
C13 C8 C9 118.3(4) . . ?
C8 C9 C10 120.7(4) . . ?
C9 C10 C11 120.1(4) . . ?
C10 C11 C14 119.2(4) . . ?
C12 C11 C10 119.6(4) . . ?
C12 C11 C14 121.2(4) . . ?
C11 C12 C13 119.6(5) . . ?
C8 C13 C12 121.6(5) . . ?
C15 C14 C11 120.8(4) . . ?
C18 C14 C11 121.2(4) . . ?
C18 C14 C15 118.0(4) . . ?
C16 C15 C14 119.0(4) . . ?
N2 C16 C15 121.3(4) . . ?
N2 C16 C17 113.8(4) . . ?
C15 C16 C17 124.9(4) . . ?
O5 C17 O6 128.3(4) . . ?
O5 C17 C16 117.6(4) . . ?
O6 C17 C16 114.1(4) . . ?
C19 C18 C14 119.8(4) . . ?
N2 C19 C18 121.1(4) . . ?
N2 C19 C20 113.5(4) . . ?
C18 C19 C20 125.3(4) . . ?
O7 C20 C19 115.1(4) . . ?
O8 C20 O7 125.8(4) . . ?
O8 C20 C19 119.1(4) . . ?

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
Zn1 O2 C1 O1 -172.6(4) 4_466 . . . ?
Zn1 O2 C1 C2 6.7(5) 4_466 . . . ?
Zn1 O3 C7 O4 -178.1(4) 4_466 . . . ?
Zn1 O3 C7 C6 4.3(5) 4_466 . . . ?
Zn1 O6 C17 O5 -177.4(4) . . . . ?
Zn1 O6 C17 C16 0.5(5) . . . . ?
Zn1 O7 C20 O8 174.5(4) . . . . ?
Zn1 O7 C20 C19 -5.3(5) . . . . ?
Zn1 N1 C2 C1 -1.3(5) 4_466 . . . ?
Zn1 N1 C2 C3 176.8(3) 4_466 . . . ?
Zn1 N1 C6 C5 -177.9(3) 4_466 . . . ?
Zn1 N1 C6 C7 2.0(5) 4_466 . . . ?
Zn1 N2 C16 C15 176.3(3) . . . . ?
Zn1 N2 C16 C17 -2.5(5) . . . . ?
Zn1 N2 C19 C18 -175.7(3) . . . . ?
Zn1 N2 C19 C20 2.7(5) . . . . ?
O1 C1 C2 N1 175.5(4) . . . . ?
O1 C1 C2 C3 -2.6(7) . . . . ?
O2 C1 C2 N1 -3.9(6) . . . . ?
O2 C1 C2 C3 178.0(4) . . . . ?
N1 C2 C3 C4 -0.1(7) . . . . ?
N1 C6 C7 O3 -4.2(6) . . . . ?
N1 C6 C7 O4 177.9(4) . . . . ?
N2 C16 C17 O5 179.4(4) . . . . ?
N2 C16 C17 O6 1.3(6) . . . . ?
N2 C19 C20 O7 2.1(6) . . . . ?
N2 C19 C20 O8 -177.7(4) . . . . ?
C1 C2 C3 C4 177.8(4) . . . . ?
C2 N1 C6 C5 -1.1(7) . . . . ?
C2 N1 C6 C7 178.7(4) . . . . ?
C2 C3 C4 C5 1.1(6) . . . . ?
C2 C3 C4 C8 -178.2(4) . . . . ?
C3 C4 C5 C6 -2.0(7) . . . . ?
C3 C4 C8 C9 -28.4(7) . . . . ?
C3 C4 C8 C13 149.7(5) . . . . ?
C4 C5 C6 N1 2.1(7) . . . . ?
C4 C5 C6 C7 -177.7(4) . . . . ?
C4 C8 C9 C10 177.1(4) . . . . ?
C4 C8 C13 C12 -176.9(5) . . . . ?
C5 C4 C8 C9 152.3(5) . . . . ?
C5 C4 C8 C13 -29.5(7) . . . . ?
C5 C6 C7 O3 175.6(4) . . . . ?
C5 C6 C7 O4 -2.3(7) . . . . ?
C6 N1 C2 C1 -178.0(4) . . . . ?
C6 N1 C2 C3 0.1(7) . . . . ?
C8 C4 C5 C6 177.2(4) . . . . ?
C8 C9 C10 C11 0.7(7) . . . . ?
C9 C8 C13 C12 1.3(8) . . . . ?
C9 C10 C11 C12 -0.6(7) . . . . ?
C9 C10 C11 C14 -177.6(4) . . . . ?
C10 C11 C12 C13 0.8(8) . . . . ?
C10 C11 C14 C15 36.4(7) . . . . ?
C10 C11 C14 C18 -144.6(5) . . . . ?
C11 C12 C13 C8 -1.2(8) . . . . ?
C11 C14 C15 C16 179.4(4) . . . . ?
C11 C14 C18 C19 -178.9(4) . . . . ?
C12 C11 C14 C15 -140.6(5) . . . . ?
C12 C11 C14 C18 38.3(7) . . . . ?
C13 C8 C9 C10 -1.1(7) . . . . ?
C14 C11 C12 C13 177.8(5) . . . . ?
C14 C15 C16 N2 -0.4(7) . . . . ?
C14 C15 C16 C17 178.3(4) . . . . ?
C14 C18 C19 N2 -0.7(7) . . . . ?
C14 C18 C19 C20 -178.9(4) . . . . ?
C15 C14 C18 C19 0.1(7) . . . . ?
C15 C16 C17 O5 0.7(7) . . . . ?
C15 C16 C17 O6 -177.5(4) . . . . ?
C16 N2 C19 C18 0.8(7) . . . . ?
C16 N2 C19 C20 179.2(4) . . . . ?
C18 C14 C15 C16 0.4(7) . . . . ?
C18 C19 C20 O7 -179.6(4) . . . . ?
C18 C19 C20 O8 0.6(7) . . . . ?
C19 N2 C16 C15 -0.2(6) . . . . ?
C19 N2 C16 C17 -179.0(4) . . . . ?

_olex2_submission_special_instructions 'No special instructions were received'
