| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1···O2i | 0.897 (18) | 1.846 (18) | 2.7411 (13) | 176.3 (17) |
| O2—H2···O1ii | 0.888 (19) | 1.891 (19) | 2.7607 (11) | 166.0 (17) |
| C9—H9···O1 | 0.98 (1) | 2.43 (1) | 3.0911 (15) | 124 (1) |
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