Cc1nn(C(=O)CNS(=O)(=O)c2ccccc2)c(C)c1Sc1ccc(Cl)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?