4-Lys-tuftsinyltuftsin 88171-14-6 L-Arginine, N2-(1-(N2-(N-(N2-(1-(N2-L-threonyl-L-lysyl)-L-prolyl)-L-lysyl)-L-threonyl)-L-lysyl)-L-prolyl)- Tuftsinyltuftsin, lys(4)- Tuftsinyltuftsin, lysine(4)-