5(.alpha.AcRPK)-TASP AIDS-111795 AIDS111795 Ac-Lys[-(Lys-Pro-Arg)2]-Lys-Lys[-Lys-Pro-Arg-Ac]-Gly-Pro-Lys[-Lys-Pro-Arg-Ac]-Glu-Lys[-Lys-Pro-Arg-Ac]-Gly-Cys-OH Pseudopeptides