| D—H···A | D—H | H···A | D···A | D—H···A |
| N2—H2···O2ii | 0.96 (3) | 2.19 (3) | 2.965 (4) | 137 (3) |
| N1—H1A···O1iii | 0.97 (2) | 2.05 (2) | 3.008 (4) | 170 (5) |
| O4—H4···O2i | 0.99 (5) | 1.63 (5) | 2.611 (3) | 169 (4) |
| O3—H3···O1 | 0.92 (6) | 1.65 (6) | 2.562 (3) | 173 (5) |
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