CCn1nc(C)c(CNC(=O)c2cc(COc3ccc(F)cc3Cl)on2)c1C
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?