Cc1ccc(-c2c(C#N)c(-c3ccc([N+](=O)[O-])cc3)c(C#N)c(=O)n2NS(=O)(=O)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?