SMILES: CC1(C[C@H]2C=C([C@H]3[C@]2(C1)C(=C)C(=O)OC3)C(=O)[O-])C
Description: The molecule is a monocarboxylic acid anion that is the conjugate base of pentalenolactone E, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a pentalenolactone E.