Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C7—H4⋯O2i | 0.95 | 2.34 | 3.204 (3) | 151 (1) |
| C1—H1⋯O3ii | 0.95 | 2.37 | 3.209 (3) | 148 (1) |
Symmetry codes: (i) 
; (ii) 
.
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