COc1ccc(C2CC(c3ccccc3C(F)(F)F)=NN2c2ccc(S(N)(=O)=O)cc2)cc1
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?