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The asymmetric unit of title compound, C18H16O2, contains two mol­ecules with slightly different conformations. In the first mol­ecule, the two phenyl rings make dihedral angles of 84.98 (11)° and the five-membered ring makes dihedral angles of 84.80 (12) and 73.00 (12)° with the phenyl rings; the corresponding angles for the second mol­ecule are 86.74 (11), 81.20 (13) and 71.36 (12)°. O—H...O hydrogen bonds between the hy­droxy and carbonyl groups are a feature of the crystal packing, which results in chains extending parallel to [100]. Weak C—H...O and C—H...π inter­actions are also observed.
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