Table 1. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O1S	0.88 (2)	2.00 (2)	2.872 (5)	173 (4)
N3—H3N⋯O2S	0.87 (2)	1.99 (2)	2.859 (5)	173 (4)
N5—H5N⋯O4S	0.86 (2)	2.09 (2)	2.919 (5)	163 (4)
N7—H7N⋯O3S	0.86 (2)	2.03 (2)	2.858 (5)	161 (4)
N9—H9N⋯O4	0.87 (2)	2.10 (2)	2.929 (5)	158 (4)
N11—H11N⋯O2	0.87 (2)	2.16 (3)	2.947 (5)	151 (4)
O1S—H1O⋯N4	0.83 (2)	2.29 (3)	2.939 (5)	136 (4)
O1S—H2O⋯O5	0.88 (2)	1.88 (2)	2.764 (5)	173 (4)
O2S—H3O⋯N2	0.85 (2)	2.16 (2)	3.006 (5)	177 (4)
O2S—H4O⋯O3	0.86 (2)	1.96 (2)	2.781 (5)	160 (5)
O3S—H5O⋯N6i	0.85 (2)	2.33 (3)	3.001 (5)	136 (3)
O3S—H6O⋯O1i	0.89 (2)	1.90 (2)	2.778 (4)	172 (4)
O4S—H7O⋯N8ii	0.87 (2)	2.09 (2)	2.954 (5)	171 (4)
O4S—H8O⋯O6ii	0.98 (2)	1.76 (2)	2.726 (5)	170 (4)

Symmetry codes: (i) ; (ii) .