CCOC(=O)C1C(C(=O)OC)=C(c2ccc(OC)cc2)c2ccccc2N1S(=O)(=O)C(F)(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?