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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N3—H3⋯O8i	0.90 (1)	2.73 (4)	3.453 (8)	138 (5)
N9—H9⋯O2	0.89 (1)	2.16 (2)	3.048 (6)	171 (6)
N6—H6⋯O5ii	0.90 (1)	2.28 (2)	3.159 (6)	165 (5)
N2—H2⋯O9iii	0.90 (1)	2.01 (2)	2.893 (6)	168 (6)
N5—H5⋯O6iv	0.90 (1)	1.99 (1)	2.885 (6)	174 (5)
N8—H8⋯O3v	0.90 (1)	1.89 (1)	2.795 (6)	179 (6)
O7—H7⋯N7	0.82	1.90	2.615 (6)	146
O4—H4⋯N4	0.82	1.92	2.634 (6)	145
O1—H1⋯N1	0.82	1.91	2.610 (6)	143

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) .