(2S,4S)-4-((2R,3S,4R,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-3-hydroxy-tetrahydro-pyran-2-yloxy)-pyrrolidine-1,2-dicarboxylic acid 2-allyl ester 1-(9H-fluoren-9-ylmethyl) ester

(2S,4R)-4-((2R,3S,4S,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-3-trifluoromethanesulfonyloxy-tetrahydro-pyran-2-yloxy)-pyrrolidine-1,2-dicarboxylic acid 2-allyl ester 1-(9H-fluoren-9-ylmethyl) ester