CC(=O)[C@H]1[C@@H]2C(=O)N(c3cccc(Cl)c3)C(=O)[C@@H]2[C@H]2c3ccccc3C=CN21
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?