(S)-2-[(4R,5S,6S)-2,2-Di-tert-butyl-6-((S)-1-[1,3]dithiolan-2-yl-ethyl)-5-methyl-[1,3,2]dioxasilinan-4-yl]-thiopropionic acid S-benzyl ester

(2S,3R,4S,5S,6S)-1-((1R,5S,7S)-10,10-Dimethyl-3,3-dioxo-3λ6-thia-4-aza-tricyclo[5.2.1.01,5]dec-4-yl)-6-[1,3]dithiolan-2-yl-3,5-dihydroxy-2,4-dimethyl-heptan-1-one