SMILES: C1=C(C(=O)NC(=O)C1=O)[O-]
Description: The molecule is an organic anion that is the conjugate base of 3,6-dihydroxypyridine-2,5-dione, obtained by selective deprotonation of the hydroxy group at positions 2. It is a conjugate base of a 3,6-dihydroxypyridine-2,5-dione.