C[C@H](O)[C@@H]1C(=O)N2CCc3ccc(-c4cccc(F)c4)cc3[C@@H]2C[C@@H]1N(C)C(=O)Nc1ccccc1
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?