[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=Branch1][S][=C][C][=C][Ring1][=Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][NH3+1][O]"}, {"from": "gpt", "value": "The molecule is an optically active form of tyrosinium having L-configuration. It has a role as a fundamental metabolite. It is a conjugate acid of a L-tyrosine and a L-tyrosine zwitterion. It is an enantiomer of a D-tyrosinium."}]