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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯S1i	0.86	2.82	3.507 (3)	139
N3—H3⋯O1	0.86	2.04	2.726 (4)	135
N4—H2N4⋯Br1ii	0.83	2.91	3.665 (4)	152
N4—H1N4⋯O1iii	0.87	1.99	2.851 (4)	167

Symmetry codes: (i) ; (ii) ; (iii) .