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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H1N⋯S1i	0.88 (3)	2.61 (3)	3.4645 (19)	162 (2)
N3—H3N⋯S1ii	0.88 (2)	2.52 (2)	3.3954 (19)	170.9 (19)
N3—H2N⋯N1	0.81 (3)	2.28 (2)	2.601 (2)	104.6 (19)

Symmetry codes: (i) ; (ii) .