O=C(COC(=O)CNC(=O)c1ccccc1F)Nc1ccc2[nH]c(O)nc2c1
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?