[{"from": "human", "value": "Describe this molecule. [C][Branch2][Ring1][Ring1][C][C@@][Branch1][#Branch1][C][C][=Branch1][C][=O][O][Branch1][=Branch1][C][=Branch1][C][=O][O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is the (R)-enantiomer of homocitric acid. It is a conjugate acid of a (2R)-homocitrate(3-). It is an enantiomer of a (2S)-homocitric acid."}]