[{"from": "human", "value": "Provide a description of this molecule. [C][C@][Branch1][Ring1][C][O][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion obtained from the transfer of a proton from the carboxy group to the amino group of 2-methyl-L-serine. Major species at pH 7.3. It is a tautomer of a 2-methyl-L-serine."}]