| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1N···O2i | 0.82 (2) | 2.12 (2) | 2.909 (4) | 162 (4) |
| N2—H2N···O2i | 0.81 (2) | 2.28 (2) | 3.034 (4) | 153 (4) |
| N3—H3N···O1ii | 0.86 (2) | 2.15 (2) | 2.941 (4) | 154 (4) |
| N4—H4N···O1ii | 0.81 (2) | 2.12 (2) | 2.889 (4) | 160 (4) |
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