[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is an L-polyhomomethionine in which there are seven methylene groups between the alpha-carbon and sulfur atoms. It is a L-polyhomomethionine and a pentahomomethionine. It is a tautomer of a L-pentahomomethionine zwitterion."}, {"from": "gpt", "value": "[C][S][C][C][C][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]