SMILES: C1=CC(=CC=C1C[C@@H](C(=O)[O-])NC(=O)CC[C@@H](C(=O)[O-])[NH3+])O
Description: The molecule is a peptide anion obtained by deprotonation of both carboxy groups and protonation of the glutamyl amino group of gamma-Glu-Tyr. Major species at pH 7.3. It has a role as a human metabolite. It is a conjugate base of a gamma-Glu-Tyr.