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[(1S,2S,4S,7R,9S,10S,12R,15R,16S)-4-Acetyloxy-15-[(2R,3S)-2-[tert-butyl(dimethyl)silyl]oxy-3-(hexanoylamino)-3-phenylpropanoyl]oxy-10,14,20,20-tetramethyl-11,18-dioxo-9,12-bis(triethylsilyloxy)-6,17,19-trioxapentacyclo[11.6.1.01,16.03,10.04,7]icos-13-en-2


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