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


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