[{"from": "human", "value": "Provide a brief overview of this molecule. [C][S][C][C][C][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an L-polyhomomethionine zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-pentahomomethionine; major species at pH 7.3. It is a L-polyhomomethionine zwitterion and a pentahomomethionine zwitterion. It is a tautomer of a L-pentahomomethionine."}]