Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O9—H9⋯N8 | 0.84 | 1.99 | 2.7280 (13) | 146 |
| C6—H6B⋯O3i | 0.99 | 2.61 | 3.3414 (15) | 131 |
| C7—H7A⋯O3i | 0.99 | 2.52 | 3.2954 (15) | 135 |
| C16—H16A⋯O3i | 0.99 | 2.60 | 3.5846 (16) | 173 |
Symmetry code: (i) 
.
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