Table 1. Hydrogen-bond geometry (Å, °).
Cg is the centroid of the C5–C10 ring.
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C15—H15⋯O1i | 0.95 | 2.57 | 3.437 (2) | 151 |
| C20—H20A⋯Cg ii | 0.99 | 2.67 | 3.5079 (19) | 143 |
Symmetry codes: (i) 
; (ii) 
.
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