cis-3-Methyl-4-methylencyclopentancarbonsaeure-tert-butylester

异戊二烯

甲基3,4-二甲基-3-环戊烯-1-羧酸酯

3,4-Dimethyl-2-cyclopenten-1-carbonsaeure-methylester

3-methyl-4-methylenecyclopentanecarboxylic acid methyl ester