2-propenyl-3-butenoate

3,4,7-trimethyl-2,3-dihydroinden-1-one

1-(2-甲基-1-环戊烯基)乙酮

3,3-dimethyl-2,3,5,6-tetrahydro-1H,4H-pentalen-1-one

(E)-1-thiophen-2-ylbut-2-en-1-one