8a-[3-[4-[4-[(4-Carboxy-3-hydroxy-3-methylbutanoyl)oxymethyl]-3,4-dihydroxyoxolan-2-yl]oxy-5-[3,5-dihydroxy-4-(3,4,5-trihydroxyoxan-2-yl)oxyoxan-2-yl]oxy-3-hydroxy-6-methyloxan-2-yl]oxy-6-methyl-4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-5-[3-(3,4,5-trimethoxyphenyl)prop-2-enoyloxy]oxan-2-yl]oxycarbonyl-2-hydroxy-6b-(hydroxymethyl)-4,6a,11,11,14b-pentamethyl-3-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicene-4-carboxylic acid