Table 2. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O4—H4B⋯N2 | 0.82 | 1.86 | 2.581 (2) | 147 |
| C8—H8A⋯O4i | 0.93 | 2.31 | 3.236 (2) | 177 |
Symmetry code: (i) 
.
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