Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O7—H71⋯O4i | 0.85 | 1.92 | 2.772 (3) | 174 |
| O7—H72⋯O5 | 0.85 | 2.14 | 2.986 (2) | 178 |
Symmetry code: (i) 
.
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