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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O1i	0.86	1.95	2.790 (2)	167
N2—H2⋯O2ii	0.86	2.23	3.055 (2)	161

Symmetry codes: (i) ; (ii) .