CCOC(=O)C1=C(C)N(Cc2ccc(C(=O)O)cc2)C(=O)NC1c1ccc([N+](=O)[O-])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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?