[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an optically active form of 4-hydroxy-2-oxoglutarate(2-) having L-configuration."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1]"}]