(2S)-6-amino-N-[(1S)-5-amino-1-{[(1S)-1-{[(1S)-1-{[(1S)-1-({2-[(2,4-dinitrophenyl)amino]ethyl}carbamoyl)-2-phenylethyl]carbamoyl}-2-hydroxyethyl]carbamoyl}-2-hydroxyethyl]carbamoyl}pentyl]-2-[(2S,3S)-2-[(2-aminophenyl)formamido]-3-methylpentanamido]hexanamide