Table 3. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N3—HN31⋯O1i	0.87 (2)	2.03 (3)	2.879 (4)	164 (6)
N6—HN62⋯O2ii	0.88 (2)	1.96 (2)	2.834 (4)	178 (5)

Symmetry codes: (i) ; (ii) .