[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][/C][=C][\\C][=C][Branch1][=Branch1][/C][=Branch1][C][=O][O][\\O]"}, {"from": "gpt", "value": "The molecule is a 2-hydroxy-6-oxonona-2,4-dienedioic acid having (2E,4Z)-configuration. It is a conjugate acid of a (2E,4Z)-2-hydroxy-6-oxonona-2,4-dienedioate(2-)."}]