AIDS-165652 AIDS165652 L-Alaninamide, N-acetyl-L-.alpha.-aspartyl-L-.alpha.-glutamyl-.beta.-phenyl-L-phenylalanyl-L-.alpha.-glutamyl-3-cyclohexyl-N1-[(1R)-1-(mercaptomethyl)-2,3-dioxo-3-[(phenylmethyl)amino]propyl]-