1,7-二氧螺环-[5,5]十一烷

2-hexa-2,4-diynylidene-1,10-dioxaspiro[4.5]dec-3-ene

4-(5-formylfuran-2-yl)butyl acetate

tert-butyl-[4-(furan-2-yl)butoxy]-dimethylsilane

1,10-dioxaspiro[4.5]dec-3-en-2-one