CCc1ccc(NC(=O)CN(Cc2ccccc2)S(=O)(=O)c2ccc3nc(C)sc3c2)cc1
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?