Cc1cc(NS(=O)(=O)c2ccc(Nc3nc(-c4ccc(C)c(C)c4)cs3)cc2)no1.Cl
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?