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[(1S,5S,6R,7S,11R,12R,13R)-12-Acetyloxy-7-(bromomethyl)-7-hydroxy-11,15,18,18-tetramethyl-3,16-dioxo-2,4-dioxatetracyclo[12.3.1.01,5.06,11]octadec-14-en-13-yl] acetate


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