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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1O⋯N2i	1.05	1.89	2.932 (6)	170
N3—H3N⋯O2ii	0.88	2.00	2.840 (5)	157

Symmetry codes: (i) ; (ii) .