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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯N3i	0.89 (2)	2.11 (2)	2.9203 (13)	151 (1)
N3—H3B⋯O1ii	0.92 (2)	2.09 (1)	2.9516 (11)	157 (1)

Symmetry codes: (i) ; (ii) .