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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H6⋯N1	0.87 (2)	1.79 (2)	2.653 (2)	173 (3)
N3—H5⋯O1	0.90 (3)	2.08 (3)	2.966 (2)	168 (2)
N3—H1⋯N2i	0.88 (3)	2.13 (3)	3.006 (2)	173 (2)

Symmetry code: (i) .