CCOc1cc(C(=O)N(CC)CC(=O)Nc2c(F)cccc2F)ccc1OCC(=O)N1CCOCC1
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?