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(10E,13Z)-(4S,7R,8S,9S,16S)-8-(tert-Butyl-dimethyl-silanyloxy)-16-{(E)-2-[2-(tert-butyl-dimethyl-silanyloxymethyl)-thiazol-4-yl]-1-methyl-vinyl}-5,5,7,9,13-pentamethyl-4-triethylsilanyloxy-oxacyclohexadeca-10,13-diene-2,6-dione