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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N7—H141⋯O2i	0.85	2.12	2.942 (4)	163
N7—H142⋯O6ii	0.84	2.15	2.970 (4)	165
O4—H181⋯O6	0.81	1.93	2.717 (3)	164
O4—H182⋯N5ii	0.80	2.25	3.051 (4)	176
O5—H341⋯O1	0.82	2.34	3.079 (4)	151
O5—H341⋯O2	0.82	2.23	2.896 (4)	139
O5—H342⋯N4iii	0.82	2.04	2.844 (4)	166
O6—H351⋯O5	0.83	1.92	2.740 (4)	174
O6—H352⋯N5iv	0.82	2.05	2.871 (4)	176
O7—H331⋯O5i	0.80	2.25	2.941 (4)	145
O7—H332⋯O3	0.81	2.23	2.962 (5)	151

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