CC(=O)c1cccc(Nc2nn(-c3ccc(OC(F)(F)F)cc3)nc2C(C)=O)c1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?