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(1S,5S,6R,7S,8S,10S,11S,13R,16S)-8-Bromo-7,16-dihydroxy-7-(hydroxymethyl)-11,15,18,18-tetramethyl-10,13-bis(triethylsilyloxy)-2,4-dioxatetracyclo[12.3.1.01,5.06,11]octadec-14-ene-3,12-dione


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