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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2N⋯S1i	0.902 (19)	2.53 (2)	3.4154 (14)	165.6 (16)
N1—H1⋯N3	0.84 (2)	2.238 (18)	2.6467 (18)	109.9 (15)
N1—H1⋯S1ii	0.84 (2)	2.992 (19)	3.5401 (15)	124.6 (16)

Symmetry codes: (i) ; (ii) .