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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O1i	0.85	2.11	2.9479 (19)	168
N2—H2A⋯O2ii	0.85	2.13	2.938 (2)	159

Symmetry codes: (i) ; (ii) .