SMILES: C[C@@H]1C(=O)C[C@@H]2[C@]13CC(C[C@H]3C=C2C(=O)[O-])(C)C
Description: The molecule is a 5-oxo monocarboxylic acid anion that is the conjugate base of 1-deoxy-11-oxopentalenic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 1-deoxy-11-oxopentalenic acid.