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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O2	0.86	2.41	2.959 (4)	122
N2—H2⋯O1i	0.86	2.15	2.934 (4)	151

Symmetry code: (i) .