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[(1S,2S,6R,7R,8R,9R,10R,11R,12S,17S,18R,20R,21S)-1,10-Diacetyloxy-8-[(S)-acetyloxy(furan-3-yl)methyl]-11,20,21-trihydroxy-8,18-dimethyl-4,15-dioxo-7-(2-oxobutyl)-3,5,14-trioxahexacyclo[16.2.1.02,6.06,11.012,17.012,20]henicosan-9-yl] acetate


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