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  • Toluene-4-sulfonic acid (2R,3S,5R,6S)-5-benzyloxy-6-benzyloxymethyl-3-[(2R,4aR,5aS,8R,9S,10aR,11aS)-2-(4-methoxy-phenyl)-9-vinyl-decahydro-1,3,5,10-tetraoxa-cyclohepta[b]naphthalen-8-yloxy]-tetrahydro-pyran-2-ylmethyl ester

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