ethyl 2-methyl-5-isopropenyl-8,8-ethylenedioxy-trans-2-nonenoate

ethyl 10-ethylenedioxy-5,7-bis(isopropenyl)-2(E)-undecen-1-oate

Diethyl 5,7-bis(isopropenyl)-2,10-dimethyl-dodeca-2(E),10-dien-1,12-dioate