| Summary: | There are three molecules in the asymmetric unit of the title compound, C23H26O7, in which the dihedral angles between two benzene rings are 4.34 (9), 18.11 (8) and 8.54 (8)°. The central penta-1,4-dien-3-one fragment makes dihedral angles of 3.95 (9) and 3.32 (16)° with the two adjacent benzene rings in one molecule, whereas the corresponding pairs of angles in the other two molecules are 10.34 (9)/17.46 (8)° and 7.87 (8)/13.33 (8)°. In the crystal, molecules are linked by intermolecular C—H...O and C—H...π weak interactions into a three-dimensional network. Finally, π–π interactions [centroid...centroid distances = 3.5984 (10) and 3.5545 (10) Å] are observed.
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