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[(1R,2R,5R,6S,7S,8R,9R,11R,12E,13S,14R)-12-[3-(5-Aminopyridin-3-yl)prop-2-ynoxyimino]-8-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-2-ethyl-9-methoxy-1,5,7,9,11,13-hexamethyl-4,16-dioxo-3,15,17-trioxabicyclo[12.3.0]heptadecan-6-yl] 2-


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