Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| N22—H22N⋯O17 | 0.87 (3) | 2.02 (3) | 2.888 (4) | 171 (3) |
| N12—H12N⋯O27i | 0.87 (3) | 1.98 (3) | 2.841 (4) | 177 (3) |
| C15—H15B⋯O13ii | 0.99 | 2.67 | 3.613 (4) | 159 |
Symmetry codes: (i) 
; (ii) 
.
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