[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch1][C][=O][C][C][=Branch1][C][=O][C][=C][Branch2][Ring2][Ring2][C][=C][Branch1][O][C][=C][Ring1][=Branch1][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][C][=C][Branch1][Branch1][C][Ring1][=N][=O][C][=Branch1][=Branch1][=C][C][=C][Ring1][Branch2][O][O]"}, {"from": "gpt", "value": "The molecule is a dihydroxyanthraquinone that is 1,8-dihydroxy-9,10-anthraquinone which is substituted a position 2 by a 3-oxobutanoyl group and at position 3 by a carboxymethyl group. An intermediate in the biosynthesis of nogalamycin. It has a role as a bacterial metabolite. It is an oxo monocarboxylic acid, a polyphenol, a polyketide and a dihydroxyanthraquinone. It is a conjugate acid of a nogalonate(2-)."}]