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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N4—H1N4⋯O1	0.82 (4)	2.27 (4)	2.788 (3)	121 (3)
N5—H1N5⋯S1i	0.80 (4)	2.84 (4)	3.522 (2)	144 (3)
N5—H2N5⋯O1ii	0.82 (3)	2.11 (4)	2.925 (3)	175 (4)

Symmetry codes: (i) ; (ii) .