Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C3—H3⋯O2i | 0.98 | 2.50 | 3.313 (3) | 140 |
| C8—H8⋯O3ii | 0.98 | 2.58 | 3.175 (2) | 119 |
Symmetry codes: (i) 
; (ii) 
.
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