CCc1ccccc1NC(=O)Cn1nc(C)c2nn(-c3ccc(Cl)cc3)c(C)c2c1=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?