Chloro-acetic acid (2R,4aR,6R,7R,8S,8aR)-8-benzyloxy-2-(4-methoxy-phenyl)-6-(2-trimethylsilanyl-ethoxy)-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester

Acetic acid (2R,3R,4S,5R,6R)-5-((2R,3R,4S,5R,6R)-5-acetoxy-6-acetoxymethyl-3-allyloxy-4-benzyloxy-tetrahydro-pyran-2-yloxy)-2-acetoxymethyl-4-benzyloxy-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-3-yl ester