Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C10—H10A⋯O10i | 0.95 | 2.55 | 3.134 (4) | 120 |
| C15—H15B⋯O9i | 0.99 | 2.58 | 3.504 (4) | 155 |
| C21—H21A⋯O7i | 0.95 | 2.50 | 3.264 (3) | 138 |
Symmetry code: (i) 
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