4-(2-(3,4-Dihydro-4,4-dimethyl-2H-1-benzopyran-6-yl)-1-propenyl)benzoic acid ethyl ester 88579-28-6 Eddbpb Ethyl 4-(2-(3,4-dihydro-4,4-dimethyl-2H-1-benzopyran-6-yl)-1-propenyl)benzoate