1,4-二氧杂螺[4.5]癸-6-烯

1,4-Dioxaspiro(4.5)dec-7-ene

2-(1,4-dioxaspiro[4.5]decan-7-yloxy)ethanol

1.3.7-辛三烯

2-(3-oxocyclohexyl)cyclohex-2-en-1-one