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[(1S,5S,6R,7S,8S,10S,11S,13R,16S)-7-Hydroxy-7-(hydroxymethyl)-11,15,18,18-tetramethyl-10,13,16-tris[(2-methylpropan-2-yl)oxycarbonyloxy]-3,12-dioxo-2,4-dioxatetracyclo[12.3.1.01,5.06,11]octadec-14-en-8-yl] acetate


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