{(2R,6S)-3-(tert-Butyl-dimethyl-silanyloxy)-6-[(R)-3-(4-methoxy-benzyloxy)-2-methyl-propyl]-tetrahydro-pyran-2-yl}-acetaldehyde

(2R,6S)-tert-butyl-(2-{6-[(2R)-3-(4-methoxybenzyloxy)-2-methylpropyl]-5,6-dihydro-2H-pyran-2-yl}-ethoxy)-dimethylsilane