Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C6—H4⋯O2i | 0.93 | 2.57 | 3.400 (4) | 149 |
| C9—H6⋯O1ii | 0.97 | 2.60 | 3.294 (4) | 129 |
Symmetry codes: (i) 
; (ii) 
.
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