3S-hydroxy-1-(4R-benzyl-2-thioxothiazolidin-3-yl)-7-tritylsulfanylhept-4E-en-1-one

(S,E)-2-(trimethylsilyl)ethyl 3-(((S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl) amino)-3-methylbutanoyl)oxy)-7-(tritylthio)hept-4-enoate