[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a homoisocitrate(3-). It is a conjugate base of a (-)-homoisocitric acid."}, {"from": "gpt", "value": "[C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C@@H1][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][=Branch1][C][=O][O-1]"}]