[{"from": "human", "value": "Provide a description of this molecule. [C][=C][Branch1][O][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][Cl]"}, {"from": "gpt", "value": "The molecule is a L-alpha-amino acid anion. It is functionally related to a pent-4-enoate. It is a conjugate acid of a L-2-amino-4-chloropent-4-enoic acid."}]