Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C2—H2⋯O4 | 0.93 | 2.40 | 2.855 (3) | 110 |
| C5—H5⋯O1i | 0.93 | 2.53 | 3.387 (3) | 153 |
| C11—H11B⋯O1ii | 0.97 | 2.65 | 3.446 (3) | 139 |
Symmetry codes: (i) 
; (ii) 
.
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