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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯O12i	0.86 (3)	2.09 (3)	2.950 (3)	177 (3)
O3—H3⋯O8ii	0.84 (3)	1.93 (3)	2.762 (3)	172 (3)
O4—H4⋯O14iii	0.82 (2)	1.97 (2)	2.770 (2)	163 (3)
N5—H5⋯O16iv	0.83 (2)	2.22 (2)	3.027 (3)	164 (2)
O7—H7⋯O4v	0.86 (2)	1.89 (2)	2.755 (3)	175 (3)
O15—H15⋯O1vi	0.84 (2)	2.22 (2)	2.893 (2)	137 (3)
O15—H15⋯O12vii	0.84 (2)	2.42 (2)	3.097 (3)	139 (3)
O16—H16⋯O11i	0.83 (2)	1.96 (2)	2.780 (3)	170 (3)
N3—H3A⋯O6iii	0.87 (2)	2.06 (2)	2.840 (2)	149 (2)
N6—H6A⋯O14	0.84 (2)	2.22 (2)	3.042 (3)	168 (2)
O8—H8A⋯O10viii	0.85 (2)	1.90 (2)	2.746 (3)	173 (3)
N9—H9A⋯O2viii	0.89 (2)	1.95 (2)	2.760 (2)	152 (2)
O11—H11A⋯O5ii	0.87 (2)	2.13 (2)	2.935 (2)	154 (3)
O11—H11A⋯O16	0.87 (2)	2.51 (3)	3.033 (3)	120 (3)
O12—H12A⋯O15ix	0.84 (2)	1.92 (2)	2.739 (2)	168 (3)
N8—H8B⋯O7x	0.89 (2)	2.09 (2)	2.867 (3)	146 (2)
N11—H11B⋯O3	0.88 (2)	2.17 (2)	2.945 (3)	147 (2)
N12—H12B⋯O10viii	0.85 (2)	2.10 (2)	2.925 (2)	164 (2)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) ; (vi) ; (vii) ; (viii) ; (ix) ; (x) .