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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯N3	0.86	2.53	2.955 (4)	112
N4—H3⋯O5i	0.86	2.17	2.981 (5)	157

Symmetry code: (i) .