4-[(1E)-2-(4,4-Dimethyl-3,4-dihydro-2H-thiochromen-6-yl)prop-1-en-1-yl]benzoic acid;benzoic acid, 4-[(1E)-2-(3,4-dihydro-4,4-dimethyl-2H-1-benzothiopyran-6-yl)-1-propen-1-yl]-
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