organic compounds
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There are two molecules in the asymmetric unit of the title compound, C17H15ClO4, in which the dihedral angles between the five-membered rings are 57.3 (1) and 51.4 (1)°. An intramolecular O—HO hydrogen bond occurs in each molecule. In the crystal, O—HO and C—HO hydrogen bonds link the moleclues into chains along the b axis.