CNC(C)C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)NC(c1ccccc1)c1ccccc1)C(C)(C)C.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 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?