Furan Carboxylic Acid
(+)-1-[(3R,3aS,5aR,6R,9bS)-6-Hydroxy-5a,9-dimethyl-2-oxo-2,3,3a,4,5,5a,6,7,9a,9b-decahydronaphtho[1,2-b]furan-3-ylmethyl]pyrrolidine-2(S)-carboxylic acid
(1aR,3R,3aβ,5S)-5-(3-Furyl)-1a,2,3,3a,4,5,5,6,7,7a-decahydro-5α,7aα-dimethyl-2-oxospiro[furan-3(2H),4(7bH)-naphth[1,2-b]oxirene]-7bβ-carboxylic acid methyl ester
(1S,2R,4S,4aS,8aR)-1-[2-(furan-3-yl)ethyl]-4-hydroxy-1,2,5-trimethyl-1,3,4,7,8,8a-hexahydronaphthalene-4a(2H)-carboxylic acid