[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=Branch1][S][=C][C][=C][Ring1][=Branch1][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][O-1]"}, {"from": "gpt", "value": "The molecule is an alpha-amino-acid anion. It is a conjugate base of a tyrosinate(1-)."}]