Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C6—H6⋯O1i | 0.95 | 2.57 | 3.3384 (18) | 138 |
| C9—H9⋯O2ii | 0.95 | 2.44 | 3.3339 (19) | 156 |
Symmetry codes: (i) 
; (ii) 
.
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