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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2⋯O1i	0.84	1.96	2.737 (3)	154
O3—H3⋯O5ii	0.84	1.92	2.744 (3)	166
O4—H4⋯O1iii	0.84	1.79	2.621 (3)	169
O5—H5⋯O1iv	0.81 (2)	1.87 (3)	2.657 (3)	164 (2)
O6—H6⋯O5v	0.79 (3)	1.94 (3)	2.721 (3)	173 (3)
N3—H3A⋯N7vi	0.88	2.50	3.195 (3)	136
N3—H3B⋯O6vii	0.88	2.32	3.167 (3)	162
N4—H4A⋯O4viii	0.88	2.35	3.112 (3)	145
N4—H4B⋯O6vii	0.88	2.00	2.878 (3)	172
N6—H6A⋯O3ix	0.88	2.26	3.097 (3)	159
N6—H6B⋯N7vii	0.88	2.19	3.007 (3)	155
N8—H8A⋯O4ix	0.88	2.20	3.043 (3)	159
N8—H8B⋯N5x	0.88	2.21	3.031 (3)	154

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