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(1R,2R,5R,7R,8R,9R,11R,12E,13S,14S)-8-[(2R,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-2-ethyl-9-methoxy-1,5,7,9,11,13-hexamethyl-12-[(E)-3-pyridin-3-ylprop-2-enoxy]imino-3,15,17-trioxabicyclo[12.3.0]heptadecane-4,6,16-trione


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