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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2′⋯S1i	0.86	2.81	3.665 (4)	179
N4—H4′⋯O3	0.86	1.94	2.643 (3)	138

Symmetry code: (i) .