[{"from": "human", "value": "Describe this molecule. [C][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is an optically active form of malate having (R)-configuration. It is a conjugate base of a (R)-malic acid. It is an enantiomer of a (S)-malate(2-)."}]