CNC(=O)c1c(NC(=O)c2ccc(S(=O)(=O)N(C)c3ccccc3)cc2)sc2c1CCN(C(C)C)C2
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?