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  • (3aR,3bS,5R,7aR,7bS,9aR,10R,12aS,12bR,12cR)-5-(tert-Butyl-dimethyl-silanyloxy)-10-((R)-1,5-dimethyl-3-oxo-hexyl)-7a,9a-dimethyl-hexadecahydro-1,3-dioxa-dicyclopenta[a,l]phenanthren-12-one

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