O=C(c1cccc(C(F)(F)F)c1)N1CCC(O)(CS(=O)(=O)Cc2ccc(Cl)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?