(3aR,4S,6R,6aR)-2,2,6-Trimethyl-tetrahydro-furo[3,4-d][1,3]dioxole-4-carbaldehyde

(E)-(4R,6S,9R)-9-[1,3]Dithian-2-yl-5,5-dimethyl-6-methylsulfanylmethoxy-1-((2S,4S,5R)-5-methyl-4-triisopropylsilanyloxy-tetrahydro-furan-2-yl)-dec-1-en-4-ol