C=C(C1=CC(=O)C(C)(C)O1)[C@@H]1CC=C([C@@H]2CC[C@H]3[C@@]2(C)CC[C@H]2C(C)(C)C(=O)[C@H](O)C[C@]32C)[C@H](O)O1
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 negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?