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(2007/10/03)5-isopropenyl-4,5-dihydrofuran-3-carboxylic acid
diethyl 5-isopropenyl-4,5-dihydrofuran-2,3-dicarboxylate
3-ethoxycarbonyl-5-isopropenyl-4,5-dihydrofuran-2-carboxylic acid
5-Isopropenyl-4,5-dihydro-furan-3-carboxylic acid ethyl ester
(E)-1,4-dibromo-2-methylbut-2-ene