O=C(NCc1ccc(C(F)(F)F)cc1)C1CC(c2ccc(C(F)(F)F)cc2)=NO1
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?