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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N4—H1⋯S1i	0.88	2.45	3.287 (5)	160
O2—H2⋯N2	0.89	1.87	2.662 (7)	146
O2—H2⋯N3ii	0.89	2.57	3.135 (7)	122

Symmetry codes: (i) ; (ii) .