(2R)-3-[(2S,5R,6R,8S)-8-{(2R,3E)-4-[(2R,4a′R,5R,6′S,8′R,8a′S)-6′-{(1S,3S)-3-[(2S,3R,6R,11R)-3,11-Dimethyl-1,7-dioxaspiro[5.5]undec-2-yl]-1-hydroxybutyl}-8′-hydroxy-7′-methyleneoctahydro-3H,3′H-spiro[f uran-2,2′-pyrano[3,2-b]pyran]-5-yl]-3-buten-2-yl}-5-hydroxy-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl]-2-hydroxy-2-methylpropanoic acid

(2R)-3-[(2S,5R,6R,8S)-8-{(2R,3E)-4-[(2R,4a′R,5R,6′S,8′R,8a′S)-6′-{(1S,3S)-3-[(2S,3R,6R,11R)-3,11-Dimethyl-1,7-dioxaspiro[5.5]undec-2-yl]-1-hydroxybutyl}-8′-hydroxy-7′-methyleneoctahydro-3H,3′H-spiro[f uran-2,2′-pyrano[3,2-b]pyran]-5-yl]-3-buten-2-yl}-5-hydroxy-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl]-2-hydroxy-2-methylpropanoic acid

1,7-Dioxaspiro[5.5]undec-10-ene-2-propanoic acid, 8-[(1R,2E)-3-[(2R,4a′R,5R,6′S,8′R,8a′S)-6′-[(1S,3S)-3-[(2S,3R,6R,11R)-3,11-dimethyl-1,7-dioxaspiro[5.5]undec-2-yl]-1-hydroxybutyl]octahydro-8′-hydroxy -7′-methylenespiro[furan-2(3H),2′(3′H)-pyrano[3,2-b]pyran]-5-yl]-1-methyl-2-propen-1-yl]-alpha,5-dihydroxy-alpha,10-dimethyl-, (alphaR,2S,5R,6R,8S)-

81720-10-7

35-Methylokadaic acid