(3S,4S,7R)-3,7-bis(tert-butyldimethylsilyloxy)-2,6-dimethylheptanethioic acid S-ethyl ester

(4R,5S)-3-[(2'R,3'S,6'R)-7'-tert-butyldimethylsilyloxy-3'-hydroxy-2',5'-dimethyl-1'-heptanoyl]-4-methyl-5-phenyl-2-oxazolidinone