Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O1—H7⋯O2i | 0.76 (6) | 1.80 (6) | 2.535 (5) | 164 (7) |
Symmetry code: (i) 
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