N,N'-(((2S,5S)-1-(4-(1,1-dimethylethyl)phenyl)-2,5-pyrrolidinediyl)bis(4,1-phenyleneiminocarbonyl-(2S)-2,1-pyrrolidinediyl((1S)-1-(1-methylethyl)-2-oxo-2,1-ethanediyl)))bis-C,C'-dimethyl ester carbamic acid
dimethyl ([(2S,5S)-1-(4-tert-butylphenyl)pyrrolidine-2,5-diyl]bis{(4,1-phenylene)carbamoyl(2S)pyrrolidine-2,1-diyl[(2S)-3-methyl-1-oxobutane-1,2-diyl]})biscarbamate