C=C1C(=O)C=C[C@]2(C)C[C@@H]3OC(=O)[C@](C)(O)[C@H]3C[C@@H]12
The negative base-10 logarithmic of dissociation constant (pka) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?