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(2R)-8-[4-(Dimethylamino)-3-methoxy-6-methyloxan-2-yl]oxy-2-ethyl-6-methoxy-1,5,7,9,9,11,13-heptamethyl-3,15,17-trioxabicyclo[12.3.0]heptadecane-4,12,16-trione


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