Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C12—H12B⋯O2i | 0.97 | 2.54 | 3.448 (4) | 156 |
Symmetry code: (i) 
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