CC(C)(C)c1ccc(S(=O)(=O)c2cnc(SCC(=O)Nc3ccc(F)c(Cl)c3)[nH]c2=O)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?