Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C3—H3B⋯N2i | 0.97 | 2.50 | 3.450 (2) | 165 |
| C3—H3C⋯N1ii | 0.97 | 2.62 | 3.183 (2) | 117 |
Symmetry codes: (i) 
; (ii) 
.
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