CC(C)C1(C)N=C(C(F)(F)F)c2cc(C(=O)C(F)(F)F)c3ccccc3c2N1
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?