O=C(c1ccc(Cl)cc1)[C@@H]1[C@@H]2C(=O)N(c3ccc(Cl)cc3)C(=O)[C@@H]2C2c3ccccc3C=NN21
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?