(2R)-2-[(2S)-2-[(2S)-2-[(2S)-2-(2-{2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]acetamido}acetamido)-3-phenylpropanamido]-4-(methylsulfanyl)butanamido]-5-[(diaminomethylidene)amino]pentanamido]-N-[(1S)-1-carbamoyl-2-methylpropyl]-5-[(diaminomethylidene)amino]pentanamide