Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C3—H3A⋯O2i | 0.97 | 2.56 | 3.215 (4) | 125 |
| C3—H3B⋯O2ii | 0.97 | 2.57 | 3.325 (4) | 135 |
Symmetry codes: (i) 
; (ii) 
.
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