4-methyl-4-prop-1-en-2-ylhepta-1,6-diene

1-penta-1,4-dien-2-ylcyclohexene

1-(4-methylhepta-1,6-dien-4-yl)cyclohexene

6-ethyl-4-methylideneocta-1,5-diene

1-ethoxy-3-methylidenehexa-1,5-diene