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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯O2i	0.90 (1)	1.99 (1)	2.873 (3)	167 (4)

Symmetry code: (i) .