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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯O1i	0.91 (2)	2.11 (2)	2.931 (2)	149.3 (16)
O1—H1⋯O2ii	0.85 (2)	1.82 (2)	2.6573 (17)	167 (2)

Symmetry codes: (i) ; (ii) .