methyl (2S,3S,4S)-5-{[(3R,4S,5S,6S)-3,4,5-trihydroxy-6-(methoxycarbonyl)-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-6-{[(3S,4aR,4S,6aR,6bS,8aS,11R,12aS,14aR,14bS)-4-(hydroxymethyl)-11-(methoxycarbonyl)-4,6a,6b,8a,11,14b-hexamethyl-14-oxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydrocyclohexa[1,2-a]chrysen-3-yl]oxy}-3,4-dihydroxytetrahydropyran-2-carboxylate