Trifluoro-methanesulfonic acid (3aR,5R,6R,6aR)-2,2-dimethyl-5-vinyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl ester

5-O-acetyl-3-O-benzoyl-6-deoxy-6-iodo-1,2-O-isopropylidene-D-allofuranose