Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C3—H3B⋯O4i | 0.99 | 2.51 | 3.420 (2) | 153 |
| C5—H5⋯O1ii | 1.00 | 2.59 | 3.386 (2) | 136 |
| C7—H7⋯O4i | 1.00 | 2.51 | 3.468 (2) | 160 |
Symmetry codes: (i) 
; (ii) 
.
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