(3R,5R,6S,7S,8R,11R,12S,13R,14S,15R)-12-[(4-O-acetyl-2,6-dideoxy-3-O-methyl-alpha-L-arabino-hexopyranosyl)oxy]-14-{[2-O-acetyl-3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranosyl]oxy}-5,7,8,11,13,15-hexamethyl-4,10-dioxo-1,9-dioxaspiro[2.13]hexadec
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