(3R,3′R,3a′R,4′R,7′S,7a′S)-3′-Acetoxy-7′,7a′-dimethyl-4-methylene-2-oxodecahydrospiro[furan-3,2′-inden]-4′-yl (2Z)-2-methyl-2-butenoate

(2Z)-2-Méthyl-2-buténoate de (3R,3′R,3a′R,4′R,7′S,7a′S)-3′-acétoxy-7′,7a′-diméthyl-4-méthylène-2-oxodécahydrospiro[furan-3,2′-inden]-4′-yle

(3R,3′R,3a′R,4′R,7′S,7a′S)-3′-Acetoxy-7′,7a′-dimethyl-4-methylen-2-oxodecahydrospiro[furan-3,2′-inden]-4′-yl-(2Z)-2-methyl-2-butenoat

(3R,3′R,3a′R,4′R,7′S,7a′S)-3′-Acetoxy-7′,7a′-dimethyl-4-methylene-2-oxodecahydrospiro[furan-3,2′-inden]-4′-yl (2Z)-2-methyl-2-butenoate

2-Butenoic acid, 2-methyl-, (3R,3′R,3a′R,4′R,7′S,7a′S)-3′-(acetyloxy)decahydro-7′,7′a-dimethyl-4-methylene-2-oxospiro[furan-3(2H),2′-[2H]inden]-4′-yl ester, (2Z)-