C[C@@]12C(=O)N(CC3CC3)CC(=O)N1[C@H](/C=C/c1ccccc1)[C@@H]1C(=O)N(c3ccccc3)C(=O)[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 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?