Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N2—H2⋯S1i | 0.86 | 2.68 | 3.479 (2) | 155 |
| N3—H3⋯N1ii | 0.86 | 2.20 | 2.991 (3) | 153 |
| C7—H7B⋯S1 | 0.97 | 2.67 | 3.070 (3) | 105 |
Symmetry codes: (i) 
; (ii) 
.
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