[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=Branch2][Ring1][P][=C][Branch2][Ring1][N][C][=Branch1][=C][=C][Ring1][=Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][S][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][O][O]"}, {"from": "gpt", "value": "The molecule is an L-tyrosine derivative that is L-DOPA in which the hydrogen at position 2 on the phenyl ring is replaced by a cysteinyl group. Found in the urine of patients with melanoma. It has a role as a human urinary metabolite. It is a member of catechols, a S-organyl-L-cysteine, a L-tyrosine derivative, an aryl sulfide, an amino dicarboxylic acid, a diamine and a S-conjugate. It is functionally related to a L-dopa."}]