Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C6—H6A⋯O1i | 1.00 | 2.54 | 3.533 (3) | 172 |
| C13—H13A⋯O2ii | 1.00 | 2.44 | 3.317 (3) | 146 |
| C18—H18A⋯O5iii | 0.95 | 2.34 | 3.120 (3) | 140 |
Symmetry codes: (i) 
; (ii) 
; (iii) 
.
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