[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an L-polyhomomethionine zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-trihomomethionine; major species at pH 7.3. It is a trihomomethionine zwitterion and a L-polyhomomethionine zwitterion. It is a tautomer of a L-trihomomethionine."}, {"from": "gpt", "value": "[C][S][C][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]