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[(2R,3R,4S,6R)-4-(Dimethylamino)-2-[[(3R,4R,8R,9R,12R,13S,14R,16S,19R)-9-ethyl-13-hydroxy-3,8,12,14,19-pentamethyl-2,6,11-trioxo-5,7,10,17-tetraoxa-1-azatricyclo[14.2.2.04,8]icosan-16-yl]methoxy]-6-methyloxan-3-yl] acetate


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