CN(CC(=O)Nc1ccc(Cl)cc1)CC(=O)Nc1ccc(F)c(F)c1F
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?