CCOC(=O)Cc1csc(NC(=O)NC2(C(F)(F)F)Oc3ccc(Cl)cc3O2)n1
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?