Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O2—H1o⋯O1i | 0.92 | 1.88 | 2.773 (2) | 164 |
| C13—H13b⋯O2ii | 0.98 | 2.40 | 3.337 (3) | 159 |
| C6—H6b⋯O2ii | 0.99 | 2.58 | 3.552 (3) | 168 |
Symmetry codes: (i) 
; (ii) 
.
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