[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][N][C][C][O][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is major microspecies at pH 7.3. It is a zwitterion and a L-serine derivative."}]