L-Alanyl-L-a-glutamyl-L-lysyl-L-lysyl-L-a-aspartyl-L-a-glutamylglycyl-L-prolyl-L-tyrosyl-L-arginyl-L-methionyl-L-a-glutamyl-L-histidyl-L-phenylalanyl-L-arginyl-L-tryptophylglycyl-L-seryl-L-prolyl-L-prolyl-L-lysyl-L-aspartic acid