Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C8—H8A⋯O1i | 0.97 | 2.58 | 3.391 (5) | 142 |
| C9—H9B⋯O2ii | 0.97 | 2.54 | 3.494 (4) | 168 |
Symmetry codes: (i) 
; (ii) 
.
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