Table 3. Hydrogen-bond geometry (Å, °) for 3 .
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C2—H2⋯O9i | 0.93 | 2.47 | 3.324 (2) | 153 |
Symmetry code: (i) 
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