[{"from": "human", "value": "Describe this molecule. [C][=C][Branch1][=C][O][C@H1][Branch1][=Branch2][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][O][O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a uronic acid that is beta-D-glucuronic acid in which the hydroxy group at position 4 and the hydrogen at position 5 have been eliminated with the introduction of a double bond between positions 4 and 5. It is a uronic acid and an alpha,beta-unsaturated monocarboxylic acid."}]