149017-68-5 L-Arginine, N2-(N-(N-(N2-(N-(N2-(N2-(N2-L-valyl-L-arginyl)-L-lysyl)-L-arginyl)-L-threonyl)-L-arginyl)-L-leucyl)-L-leucyl)- Val-arg-lys-arg-thr-arg-leu-leu-arg Valyl-arginyl-lysyl-arginyl-threonyl-arginyl-leucyl-leucyl-arginine Vrkrtrllr