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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N7—H7⋯O5	0.97	2.04	3.009 (2)	175
O2—H2⋯O4i	0.95	1.74	2.662 (2)	165
O3—H1⋯O1ii	1.04	1.63	2.622 (2)	159
O5—H5A⋯O2iii	0.88	2.44	3.103 (2)	133
O5—H5A⋯O4iv	0.88	2.52	3.129 (2)	127
O5—H5B⋯O5iv	0.91	2.01	2.890 (2)	163

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