Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N1—H1A⋯O2i | 0.88 | 1.99 | 2.845 (3) | 164 |
| C7—H7A⋯O2i | 0.99 | 2.47 | 3.249 (3) | 135 |
| C12—H12A⋯O1ii | 0.98 | 2.43 | 3.104 (3) | 126 |
Symmetry codes: (i) 
; (ii) 
.
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