Cc1ccccc1N1C(=O)NC(=O)/C(=C\c2cnn(-c3ccccc3)c2)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 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?