5(RPK)-TASPm AIDS-111790 AIDS111790 Lys[-(Lys-Pro-Arg-NH2)2]-Lys[-Lys-Pro-Arg-NH2]-Lys[-Lys-Pro-Arg-NH2]-Lys[-Lys-Pro-Arg-NH2]-Gly-Cys-OH Pseudopeptides