4-Hydroxy-5,8-dimethyl-3-methylene-2,7-dioxo-2,3,3a,4,4a,7,9,9a-octahydroazuleno[6,5-b]furan-9-yl 3-methyl-2-butenoate

2-Butenoic acid, 3-methyl-, 2,3,3a,4,4a,7,9,9a-octahydro-4-hydroxy-5,8-dimethyl-3-methylene-2,7-dioxoazuleno[6,5-b]furan-9-yl ester

3-Méthyl-2-buténoate de 4-hydroxy-5,8-diméthyl-3-méthylène-2,7-dioxo-2,3,3a,4,4a,7,9,9a-octahydroazuléno[6,5-b]furan-9-yle

4-Hydroxy-5,8-dimethyl-3-methylen-2,7-dioxo-2,3,3a,4,4a,7,9,9a-octahydroazuleno[6,5-b]furan-9-yl-3-methyl-2-butenoat

4-Hydroxy-5,8-dimethyl-3-methylene-2,7-dioxo-2,3,3a,4,4a,7,9,9a-octahydroazuleno[6,5-b]furan-9-yl 3-methyl-2-butenoate