Cc1cc(F)ccc1NC(=O)c1ccc(NS(=O)(=O)c2cc(C(C)(C)C)ccc2C)cc1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?