[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an amino acid zwitterion arising from transfer of a proton from the carboxy to the amino group of 2-methylserine; major species at pH 7.3 It is a tautomer of a 2-methyl-DL-serine."}, {"from": "gpt", "value": "[C][C][Branch1][Ring1][C][O][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]