[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is the (R)-enantiomer of 2-hydroxyglutaric acid. It has a role as an algal metabolite. It is an enantiomer of a (S)-2-hydroxyglutaric acid."}, {"from": "gpt", "value": "[C][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][O]"}]