Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C8—H8B⋯O3i | 0.98 | 2.58 | 3.476 (2) | 151 |
| C9—H9A⋯O1ii | 0.99 | 2.31 | 2.782 (2) | 108 |
| C9—H9B⋯O3 | 0.99 | 2.55 | 2.918 (2) | 102 |
Symmetry codes: (i) 
; (ii) 
.
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