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  • 4-{6-[4-(2-(tert-butyl-dimethyl-silanyloxy)-2-{3-[3-(tert-butyl-dimethyl-silanyloxy)-2-hydroxy-5-(4-methyl-3,6-dihydro-2H-pyran-2-yl)-pent-4-enyl]-oxiranyl}-ethyl)-2-methyl-pent-4-enyl]-5,6-dihydro-2H-pyran-2-yl}-but-2-ynoic acid

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