(2R,3R,4S,5S,6R)-6-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-4-(4-methoxy-benzyloxy)-3,5-dimethyl-tetrahydro-pyran-2-carbaldehyde

[6-(2-{2-[6-(9-bromo-6-methoxy-3-methyl-1-triisopropylsilanyloxy-nona-2,4,8-trienyl)-2,4-dimethoxy-tetrahydro-pyran-2-ylmethyl]-oxazol-4-yl}-1-methyl-vinyl)-4-(4-methoxy-benzyloxy)-3,5-dimethyl-tetrahydro-pyran-2-yl]-acetaldehyde