| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1···O2i | 0.81 (4) | 1.98 (4) | 2.766 (2) | 165 (4) |
| O2—H2···O3 | 0.90 (3) | 1.86 (3) | 2.750 (3) | 171 (3) |
| O3—H3···O4ii | 0.96 (4) | 1.82 (4) | 2.761 (2) | 167 (3) |
| O4—H4···O1 | 0.89 (4) | 1.85 (4) | 2.739 (3) | 175 (3) |
| C9—H9···O2 | 0.95 | 2.45 | 3.092 (3) | 124 |
| C19—H19···O4 | 0.95 | 2.42 | 3.063 (3) | 125 |
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