O=C(c1ccc(F)cc1)[C@@H]1[C@@H](C(=O)c2ccccc2)[C@@]2(C(=O)Nc3ccccc32)[C@H]2c3ccccc3C=CN12
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?