(4S)-3-[(2S)-2-[[(9H-Fluoren-9-ylmethoxy)carbonyl]amino]-1,4-dioxo-4-[(triphenylmethyl)amino]butyl]-2,2-dimethyl-4-oxazolidinecarboxylic acid

(4S)-3-[(2S)-2-[[(9H-Fluoren-9-ylmethoxy)carbonyl]amino]-1,4-dioxo-4-[(triphenylmethyl)amino]butyl]-2,2-dimethyl-4-oxazolidinecarboxylic acid