(S)-2-[(S)-2-((3S,4S)-4-{(S)-2-[(S)-2-((S)-2-Amino-3-hydroxy-propanoylamino)-propanoylamino]propanoylamino}-3-hydroxy-5-phenylpentanoylamino)-3-methylbutanoylamino]-3-methyl-butyric acid methyl ester AIDS-080608 AIDS080608