Cc1ccc(NC(=O)C2CCN(c3nc4ccccc4nc3C(F)(F)F)CC2)cc1F
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?