(2E)-3-{(1R,4R,4aR,7S,7′R,9aR,9bR,11aR)-7′-[(2,4-Dihydroxy-6-methylbenzoyl)oxy]-1-[(2R,3E,5R)-5,6-dimethyl-3-hepten-2-yl]-7-hydroxy-7′,9a,11a-trimethyl-6′,8′-dioxo-1,2,2a,3,4a,6,7,7′,8,8′,9,9a,9b,10,1 1,11a-hexadecahydro-1′H,6′H-spiro[indeno[6,7,1-mna]anthracene-4,5′-isochromen]-3′-yl}acrylic acid

(2E)-3-{(1R,4R,4aR,7S,7′R,9aR,9bR,11aR)-7′-[(2,4-Dihydroxy-6-methylbenzoyl)oxy]-1-[(2R,3E,5R)-5,6-dimethyl-3-hepten-2-yl]-7-hydroxy-7′,9a,11a-trimethyl-6′,8′-dioxo-1,2,2a,3,4a,6,7,7′,8,8′,9,9a,9b,10,1 1,11a-hexadecahydro-1′H,6′H-spiro[indeno[6,7,1-mna]anthracene-4,5′-isochromen]-3′-yl}acrylic acid

Benzoic acid, 2,4-dihydroxy-6-methyl-, (1′R,4a′R,5R,7R,7′S,9a′R,9b′R,11a′R)-3-[(E)-2-carboxyethenyl]-1′,2′,2′a,3′,4′a,6′,7,7′,8,8′,9′,9′a,9′b,10′,11′,11′a-hexadecahydro-7′-hydroxy-7,9′a,11′a-trimethyl -6,8-dioxo-1′-[(1R,2E,4R)-1,4,5-trimethyl-2-hexen-1-yl]spiro[1H-2-benzopyran-5(6H),4′-[4H]indeno[6,7,1-mna]anthracen]-7-yl ester

Ergophilone A