Cc1ccc(N2C(=O)CS(=O)(=O)C23C(=O)N(Cc2ccc(Cl)cc2)c2ccccc23)cc1C
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?