[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an amino acid zwitterion obtained by transfer of a proton from the carboxy to the amnio group of serine. It is a tautomer of a serine."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][O]"}]