2,2-Dimethyl-propionic acid (S)-2-[(2S,4S,5R,6S)-2-(3,4-dimethoxy-phenyl)-6-((E)-(1S,2R,5S)-2-methoxymethoxy-1,3,5-trimethyl-6-oxo-hex-3-enyl)-5-methyl-[1,3]dioxan-4-yl]-2-methoxymethoxy-ethyl ester

methyl (2R,3S,4R,5S,6R)-7-(tert-butyldiphenylsilyloxy)-2-hydroxy-3,5-<(S)-3,4-dimethoxybenzylidenedioxy>-4,6-dimethylheptanoate