Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O3—H3⋯O4i | 0.90 (4) | 1.87 (4) | 2.750 (3) | 164 (4) |
Symmetry code: (i) 
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