spiro,cyclopentane,isobenzofuran,benzofuran,furan
Furan
25645-08-3(3S,3aβ,9aβ,9bα)-3a,4,5,5a,6,7,8,9,9a,9b-Decahydro-6β,8β-dihydroxy-3β,5aα-dimethyl-9-methylenenaphtho[1,2-b]furan-2(3H)-one Isobenzofuran
96829-61-71,7-Ethenocycloprop[c]isobenzofuran,4-[(1R)-1,- 5-dimethyl-4-hexenyl]-1,1a,3,3a,4,5,6,7- octahydro-3-methoxy-7-methyl-,(1R,1aR,3R,- 3aR,4R,7R,7aR)-