AIDS-221615 AIDS221615 NH2-Arg-Trp-Cys(x2)-Tyr-Arg-Lys-Cys(x1)-Tyr-Lys-Gly-Phe-Cys(x1)-Tyr-Arg-Lys-Cys(x2)-Arg-NH2 Polyphemusin deriv.