(2S,3R)-3-(Dimethyl-p-tolyl-silanyl)-2-methyl-5-((4R,6S)-2,2,6-trimethyl-[1,3]dioxan-4-yl)-pentanoic acid methyl ester

(2S,3R,6R,8S)-8-(tert-Butyl-dimethyl-silanyloxy)-3-(dimethyl-p-tolyl-silanyl)-6-hydroxy-2-methyl-nonanoic acid benzyl ester