Acta Cryst. (2013). E69, o514 [ doi:10.1107/S1600536813006302 ]
Abstract: In the title molecule, C18H18O4, the dihedral angle between the benzene rings is 52.52 (7)°. The C=C bond of the central enone group adopts a trans conformation. The relative conformation of the two double bonds in the enone group is s-transoid. In the crystal, molecules are linked by pairs of weak C-HO hydrogen bonds, forming inversion dimers.
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