CCC(C(=O)Nc1cc(F)ccc1F)n1nc(C)c2c(C)n(-c3ccc(C)cc3)nc2c1=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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?