5[R.PSI.(CH2N)PN]-TASP AIDS-111804 AIDS111804 H-[Arg-.psi.(CH2N)-Pro-Asn]-Lys-[Asn-Pro-.psi.(CH2N)-Arg]-Lys-Lys-[Asn-Pro-.psi.(CH2N)-Arg]-Gly-Pro-Lys-[Asn-Pro-.psi.(CH2N)-Arg]-Glu-Lys-[Asn-Pro-.psi.(CH2N)-Arg]-Gly-Cys-OH Pseudopeptides