Cc1ccc(NC(=O)CC/C(CC(=O)C(C)(C)C)=N\Nc2ccc([N+](=O)[O-])cc2[N+](=O)[O-])cc1C
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?