ethyl 3-(2,2-dichlorovinyl)-2,2-dimethyl-1-cyclopropanecarboxylate 2,2-Dimethyl-3-(2-methylpropyl)cyclopropanecarboxylic acid p-(methoxymethyl)benzyl ester ??????,???-?????????? ?????? ????? methyl(±)cis，trans-2，2-dimethyl-3-(2-methyl-1-propenyl cyclopropane carboxylate) ?? 3-(2,2-??????)-2,2-???????????????? ?? ??????? 2,2-DIMETHYL-3-(2-METHYLPROP-1-ENYL)CYCLOPROPANECARBOXYLIC ACID