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(1R,2R,7R,9S,10R,11R,13R,16S,17R)-10-[(2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-2-ethyl-11-hydroxy-1,7,9,11,13,14,16-heptamethyl-3,5,18,20-tetraoxa-14-azatricyclo[15.3.0.04,6]icosan-19-one


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