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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O6i	0.860 (18)	2.157 (18)	3.0148 (17)	174.8 (14)
O6—H6A⋯O5	0.82 (2)	2.06 (3)	2.8640 (18)	165 (2)
O6—H6B⋯N2	0.86 (3)	2.11 (2)	2.9586 (17)	171 (2)
C4—H4⋯O1	0.93 (3)	2.32	2.890 (2)	120

Symmetry code: (i) .