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[(1S,2S,3R,4S,7R,9S,10S,12R,15R,16S)-4-Acetyloxy-12-(cyclopropanecarbonyloxy)-15-[(2R,3R)-4,4-difluoro-2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]oxy-9-hydroxy-10,14,20,20-tetramethyl-11,18-dioxo-6,17,19-trioxapentacyclo[11.6.1.01,16.03,1


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