NC(Cc1ccccc1)C(=O)N[C@H]1c2ccsc2/C(=N/O)[C@H]1O.O=C(O)C(F)(F)F
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?