CC(C)N1C(=O)/C(=C\Nc2cccc([N+](=O)[O-])c2)C(=O)N(CCc2ccccc2)C1=O
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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?