(2R,3S,4S)-3-Acetoxy-4-((2R,3R)-6-{(S)-1-[(4S,5S)-5-((R)-1-acetoxy-propyl)-5-methyl-2-oxo-[1,3]dioxolan-4-yl]-ethyl}-3-benzyloxy-3,5-dimethyl-3,4-dihydro-2H-pyran-2-yl)-2-methyl-pentanoic acid methyl ester