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[(1S,2S,3R,4S,7R,9S,10S,12R,15R,16S,20S)-4,12-Diacetyloxy-9-hydroxy-15-[(2R,3S)-2-hydroxy-5-methyl-3-[(2-methylpropan-2-yl)oxycarbonylamino]hex-4-enoyl]oxy-10,14,20-trimethyl-11,18-dioxo-6,17,19-trioxahexacyclo[11.6.1.01,16.03,10.04,7.015,20]icos-13-en-2-


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