4-((2S,3S,4S,5R,6R)-4,5-bis(benzyloxy)-6-((benzyloxy)methyl)-3-iodo-2-(((3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyltetrahydro-5H-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran-5-yl)methoxy)tetrahydro-2H-pyran-3-yl)butyl acetate