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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N3—H3A⋯O1	0.88	2.18	2.917 (2)	141
N4—H4A⋯O2	0.88	1.89	2.623 (2)	139