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(1R,5R,6S,7R,11R,14R,15R)-6-[(2S,4R,6S)-4,6-Dimethyloxan-2-yl]oxy-9,9-dihydroxy-1,5,7,11,13,14-hexamethyl-3,16,18-trioxa-13-azabicyclo[13.3.0]octadecane-4,17-dione


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