Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C1—H1⋯N2i | 0.93 | 2.51 | 3.428 (3) | 172 |
| C8—H8A⋯N1ii | 0.97 | 2.50 | 3.410 (3) | 156 |
| C8—H8B⋯N2i | 0.97 | 2.30 | 3.228 (3) | 160 |
Symmetry codes: (i) 
; (ii) 
.
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