Cc1ccc(NC(=O)Cn2cc(C(F)(F)F)cc(Cl)c2=O)cc1S(=O)(=O)N1CCCCC1
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?