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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N7—H7⋯O1	0.85 (2)	1.95 (2)	2.6248 (16)	135.9 (18)
O1—H25⋯N8	0.94 (2)	1.64 (2)	2.5671 (16)	175 (3)