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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O2i	0.84 (2)	2.11 (2)	2.937 (2)	172 (2)

Symmetry code: (i) .