[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch1][C][=O][O][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is zwitterionic form of O-acetyl-L-homoserine having an anionic carboxy group and a protonated alpha-amino group; major species at pH 7.3. It is a tautomer of an O-acetyl-L-homoserine."}]