Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C9—H9A⋯O1 | 0.97 | 2.20 | 3.125 (3) | 159 |
| C9—H9B⋯O1i | 0.97 | 2.56 | 3.321 (3) | 135 |
| C12—H12B⋯O4ii | 0.96 | 2.44 | 3.041 (4) | 120 |
Symmetry codes: (i) 
; (ii) 
.
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