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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H21⋯O1i	0.91	2.03	2.928 (2)	173
N2—H22⋯O2ii	0.92	2.10	2.971 (2)	159

Symmetry codes: (i) ; (ii) .