SP(1-4);Substance P (1-4);AC1L590F;Arginyl-prolyl-lysyl-prolinamide;L-Prolinamide, L-arginyl-L-prolyl-L-lysyl-;(2S)-N-[(2S)-6-amino-1-[(2S)-2-carbamoylpyrrolidin-1-yl]-1-oxohexan-2-yl]-1-[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]pyrrolidine-2-carboxamide;69355-89-1