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  • (2R,3R,5S,8R,10S)-8,10-Dimethyl-2-((1R,3S)-3-methyl-5-oxo-1-triethylsilanyloxy-pentyl)-3-triethylsilanyloxy-1-oxa-6-aza-spiro[4.5]decane-6-carboxylic acid tert-butyl ester

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