1,1-Bis(3-bromo-4-hydroxy-2,6-dimethylphenyl)-1,3-dihydro-3-oxoisobenzofuran-6-carboxylic acid C??? ??, ??, ??

1,1-Bis(3-bromo-4-hydroxy-2,6-dimethylphenyl)-1,3-dihydro-3-oxoisobenzofuran-6-carboxylic acid ?? ?? ? ???

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1,1-Bis(3-bromo-4-hydroxy-2,6-dimethylphenyl)-1,3-dihydro-3-oxoisobenzofuran-6-carboxylic acid ?? ??