3-((S)-2,2,4-Trimethyl-[1,3]dioxolan-4-yl)-propionaldehyde

(1R,4S)-4-(4-methoxybenzyloxy)-6-(tert-butyldiphenylsilyloxy)-1-((2R,5R)-5-(hydroxymethyl)-5-methyl-tetrahydrofuran-2-yl)-4-methylhexan-1-ol