O-(((4S,5S)-5-((R)-2,2-dimethyl-5-methylene-1,3-dioxan-4-yl)-2,2-dimethyl-1,3-dioxolan-4-yl)methyl) S-methyl carbonodithioate

1,5-anhydro-5-seleno-D-glucitol

2,3,4,6-di-O-isopropyIidene-1,5-di-O-methanesulfonyl-L-iditol