(2S,3R)-2-{[(tert-butoxy)carbonyl]amino}-3-{[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(triphenylmethyl)carbamoyl]propanoyl]oxy}butanoic acid
(2S,3R)-2-{[(tert-butoxy)carbonyl]amino}-3-{[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(triphenylmethyl)carbamoyl]propanoyl]oxy}butanoic acid