[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][N][C][=Branch1][C][=O][/C][=C][/C][=Branch1][C][=O][N]"}, {"from": "gpt", "value": "The molecule is an L-alpha-amino acid zwitterion that results from the transfer of a proton from the carboxylic acid group to the alpha-amino group of N(3)-fumaramoyl-(S)-2,3-diaminopropanoic acid; major species at pH 7.3. It is a tautomer of a N(3)-fumaramoyl-(S)-2,3-diaminopropanoic acid."}]