[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a tricarboxylic acid dianion. It is a conjugate base of a homoisocitrate(1-). It is a conjugate acid of a homoisocitrate(3-)."}, {"from": "gpt", "value": "[H+1].[C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][=Branch1][C][=O][O-1]"}]