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(1R,11R,14R)-8-[4-(Dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-2-ethyl-9-hydroxy-6-(5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl)oxy-1,5,7,9,11,14-hexamethyl-3,16,18-trioxa-13-azabicyclo[13.3.0]octadecane-4,17-dione


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