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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯S1i	0.81 (2)	2.55 (2)	3.351 (2)	169 (2)
N2—H2⋯S1ii	0.77 (2)	2.78 (2)	3.4229 (19)	142 (2)

Symmetry codes: (i) ; (ii) .