[{"from": "human", "value": "Provide a description of this molecule. [C][C@H1][Branch2][Ring1][Ring2][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 formed from L-threonine and L-serine residues. It has a role as a metabolite. It is functionally related to a L-threonine and a L-serine. It is a tautomer of a Thr-Ser zwitterion."}]