(S)-1-((1-((4-((((4-硝基苯氧基)羰基)氧基)甲基)苯基)氨基)-1-氧代-5-脲基戊烷-2-基)氨基甲酰基)环丁烷-1-羧酸乙酯

(S)-1-((1-((4-((((4-硝基苯氧基)羰基)氧基)甲基)苯基)氨基)-1-氧代-5-脲基戊烷-2-基)氨基甲酰基)环丁烷-1-羧酸乙酯

Ethyl (S)-1-((1-((4-((((4-nitrophenoxy)carbonyl)oxy)methyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)carbamoyl)cyclobutane-1-carboxylate