[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is zwitterionic form of trihomomethionine. It is a tautomer of a trihomomethionine."}, {"from": "gpt", "value": "[C][S][C][C][C][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]