[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is zwitterionic form of hexahomomethionine. It is a tautomer of a hexahomomethionine and a L-hexahomomethionine."}, {"from": "gpt", "value": "[C][S][C][C][C][C][C][C][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]