Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C11—H11⋯O2i | 0.95 | 2.53 | 3.203 (3) | 128 |
| C15—H15⋯O3ii | 0.95 | 2.57 | 3.195 (3) | 124 |
Symmetry codes: (i) 
; (ii) 
.
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