4-((2R,3S,4R)-3,4-bis(benzyloxy)-2-((benzyloxy)methyl)-3,4-dihydro-2H-pyran-5-yl)butan-1-ol

4-((2S,3S,4S,5R,6R)-4,5-bis(benzyloxy)-6-((benzyloxy)methyl)-2-(4-hydroxybutoxy)-3-iodotetrahydro-2H-pyran-3-yl)butyl acetate