[(3S,10S,11S,12S,13S,14S,17S)-17-acetyl-11-acetyloxy-3-[(2S,4S,5R,6R)-5-[(2S,4S,5R,6R)-5-[(2S,3R,4R,5R,6R)-3,5-dihydroxy-4-methoxy-6-methyl-oxan-2-yl]oxy-4-methoxy-6-methyl-oxan-2-yl]oxy-4-methoxy-6-methyl-oxan-2-yl]oxy-14-hydroxy-10,13-dimethyl-1,2,3,4,5