[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an optically active form of malic acid having (S)-configuration. It has a role as a geroprotector. It is a conjugate acid of a (S)-malate(2-). It is an enantiomer of a (R)-malic acid."}]