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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N5—H1⋯N3i	0.870 (18)	2.109 (18)	2.9748 (14)	173.5 (16)

Symmetry code: (i) .