benzoic acid (1S,3R,4S)-4-(tert-butyldimethylsilanyloxy)-4-[(4R,5S)-5-((S)-1-methoxybut-3-enyl)-2,2-dimethyl-1,3-dioxolan-4-yl]-1,3-dimethyl-2-oxobutyl ester

(S)-4-{(4S,5R)-5-[(1S,2S)-3-(4-methoxybenzyloxy)-1-(tert-butyldimethylsilanyloxy)-2-methylpropyl]-2,2-dimethyl-1,3-dioxolan-4-yl}-4-methoxybutyraldehyde