CCOc1cc(C2CC(c3ccc(NS(=O)(=O)c4cc([N+](=O)[O-])ccc4C)cc3)=NN2)ccc1O
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?