CC(=O)C1=NN(c2ccc(Cl)cc2)C(c2ccc3c(c2)OCO3)N(C(C)=O)N1C
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?