Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O1—H1⋯N2 | 0.82 | 1.84 | 2.5587 (19) | 146 |
| C3—H3⋯O2i | 0.93 | 2.64 | 3.567 (3) | 175 |
| C4—H4⋯O1i | 0.93 | 2.66 | 3.282 (2) | 125 |
Symmetry code: (i) 
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