5-carbomethoxy-3-ethyl-9-methoxybicyclo<4.3.0>nona-3,8-dien-7-one

trans-4-methyl-3-hexen-1-ol

1-bromo-1-methyl-(3E)-hexene

4-ethyl-2,4-pentadienol

4-ethyl-penta-2,4-dienoic acid