Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C6—H6⋯O1i | 0.95 | 2.55 | 3.151 (2) | 121 |
| C7—H7⋯O2 | 0.95 | 2.55 | 3.250 (2) | 130 |
| C12—H12⋯O2ii | 0.95 | 2.51 | 3.435 (2) | 165 |
Symmetry codes: (i) 
; (ii) 
.
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