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[(1S,5S,6R,10E,12R,13S)-10-Acetyloxy-12-[(2R,3S)-3-acetyloxy-2-(2-acetyloxyethyl)oxetan-3-yl]-6-[(2R,3S)-2-hydroxy-5-methyl-3-[(2-methylpropan-2-yl)oxycarbonylamino]hexanoyl]oxy-7,11,14,14-tetramethyl-3,9-dioxo-2,4-dioxatricyclo[6.5.1.01,5]tetradeca-7,10-


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