Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| C3—H3⋯O1i | 0.93 | 2.43 | 3.299 (4) | 155 |
| N1—H1⋯O3ii | 0.86 | 2.07 | 2.916 (3) | 169 |
| C9—H9⋯N1 | 0.93 | 2.55 | 3.103 (4) | 119 |
Symmetry codes: (i) 
; (ii) 
.
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