SMILES: C1=CC=C(C=C1)C[C@@H](C(=O)N[C@@H](CC2=CN=CN2)C(=O)O)N
Description: The molecule is a dipeptide composed of L-phenylalanine and L-histidine joined by a peptide linkage. It has a role as a metabolite. It derives from a L-phenylalanine and a L-histidine. It is a tautomer of a Phe-His zwitterion.