CS(=O)(=O)Nc1ccc(C2=NN(C(=O)c3cccc(F)c3)C(c3cccs3)C2)cc1
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?