O=C(COC(=O)c1cccc(S(=O)(=O)NCc2ccccc2)c1)Nc1ccccc1OC(F)F
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?