CCC(=O)N1CCN(c2ccc(NC(=O)c3ccc(C#N)cc3F)cc2Cl)CC1
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?