[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=Branch2][Ring1][#Branch2][=C][C][=C][Ring1][=Branch1][C][C@@H1][Branch1][S][C][=Branch1][C][=O][N][C@@H1][Branch1][Ring1][C][O][C][=Branch1][C][=O][O][N][O]"}, {"from": "gpt", "value": "The molecule is a dipeptide obtained by formal condensation of the carboxy group of L-tyrosine with the amino group of L-serine. It is functionally related to a L-tyrosine and a L-serine."}]