100111-08-8 H 256 H-256 H256 L-Glutamic acid, N-(N2-(N-(3-phenyl-2-((N-(N-L-prolyl-L-threonyl)-L-alpha-glutamyl)amino)propyl)-L-phenylalanyl)-L-arginyl)-, (S)- Pro-thr-glu-phe-CH2NH-phe-arg-glu