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  • (R)-3-tert-Butoxycarbonylamino-3-{5-[(5R,6R,7S)-6-(tert-butyl-dimethyl-silanyloxy)-9-iodo-2,2-dimethyl-1,3-dioxa-spiro[4.4]non-8-en-7-yloxy]-6-chloro-pyridin-2-yl}-propionic acid methyl ester

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