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{(2R,3S,3aR,4aS,7R,8aS,9S,9aR)-7-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3,9-bis-triethylsilanyloxy-decahydro-furo[3,2-b]pyrano[2,3-e]pyran-2-yl}-acetic acid
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{(2R,3S,3aR,4aS,7R,8aS,9S,9aR)-7-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3,9-bis-triethylsilanyloxy-decahydro-furo[3,2-b]pyrano[2,3-e]pyran-2-yl}-acetic acid methyl ester
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(2R,3S,3aS,4aS,7R,8aR,9S,9aS)-7-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-(2-trityloxy-ethyl)-decahydro-furo[3,2-b]pyrano[2,3-e]pyran-3,9-diol