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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯N1i	0.81 (3)	2.12 (3)	2.911 (3)	165 (3)
N4—H3A⋯O1ii	0.84 (3)	1.98 (3)	2.822 (3)	178 (2)

Symmetry codes: (i) ; (ii) .