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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯N4i	0.88 (2)	1.94 (2)	2.792 (3)	162 (2)

Symmetry code: (i) .