(2S,3R)-3-(((S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-(tert-butoxy)-5-oxopentanoyl)oxy)-2-((tert-butoxycarbonyl)amino)butanoic acid

(2S,3R)-3-(((S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-(tert-butoxy)-5-oxopentanoyl)oxy)-2-((tert-butoxycarbonyl)amino)butanoic acid,