[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a tetrapeptide composed of L-lysine and three L-methionine units joined in sequence by peptide linkages. It has a role as a metabolite. It is functionally related to a L-lysine and a L-methionine."}, {"from": "gpt", "value": "[C][S][C][C][C@@H1][Branch2][Ring1][=C][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch1][C][C][S][C][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch1][C][C][S][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch1][C][C][C][C][N][N]"}]