Cc1ccc(-c2nc(SCC(=O)N(C)C3CCS(=O)(=O)C3)[nH]c2-c2ccc(C)cc2)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?