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  • 4-{4-[7-(tert-butyl-dimethyl-silanyloxymethyl)-2-methoxy-5-methyl-4-oxo-non-5-enyl]-10-methoxy-5,5-dimethyl-2-naphthalen-2-yl-11-triethylsilanyloxy-1,3,7-trioxa-spiro[5.5]undec-8-yl}-3-methoxy-2-methoxymethoxy-butyric acid methyl ester

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