[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch2][Ring1][=Branch1][C][C][=Branch1][C][=O][N][C@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is a peptide anion arising from deprotonation of the three carboxy groups and protonation of the primary amino group of D-gamma-glutamyl-D-glutamic acid. It is a conjugate base of a D-gamma-glutamyl-D-glutamic acid."}]