(4S)-4-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-carboxypropanamido]propanamido]-4-carboxybutanamido]-3-carbamoylpropanamido]-4-methylpentanamido]-3-methylpentanamido]-3-carboxypropanamido]-3-hydroxypropanamido]-3-phenylpropanamido]-4-carbamoylbutanamido]-4-{[(1S,2S)-1-{[(1S)-1-carboxy-2-methylpropyl]carbamoyl}-2-methylbutyl]carbamoyl}butanoic acid