[{"from": "human", "value": "Could you provide a description of this molecule? [C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][C][NH3+1]"}, {"from": "gpt", "value": "The molecule is the zwitterion formed from 5-aminolevulinic acid by transfer of a proton from the carboxy group to the amino group. It is the major species present at physiological pH. It is a tautomer of a 5-aminolevulinic acid."}]