| D—H···A | D—H | H···A | D···A | D—H···A |
| N9—H9···O20 | 0.81 (3) | 2.05 (3) | 2.8588 (18) | 178 (3) |
| N17—H17B···O19iii | 0.89 (3) | 2.35 (3) | 3.214 (2) | 164 (2) |
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