Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N1—H1A⋯O2i | 0.86 (3) | 2.08 (3) | 2.8840 (18) | 156 (2) |
| N1—H1B⋯O3ii | 0.87 (2) | 2.21 (2) | 3.0462 (18) | 163.1 (19) |
| C6—H6⋯O3ii | 1.00 | 2.52 | 3.2787 (19) | 133 |
Symmetry codes: (i) 
; (ii) 
.
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