CSC1=NS(=O)(=O)c2cc(C(=O)NN(C)C(=O)c3cc4c(cc3Cl)SC(SC)=NS4(=O)=O)c(Cl)cc2S1
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?