Cc1cccc(N2CCN(S(=O)(=O)c3ccc(F)c(C(=O)Nc4cccc(Cl)c4C)c3)CC2C)c1
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 negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?