CCOc1cc(NC(=O)c2ccccc2C(=O)O)c(OCC)cc1NC(=O)c1ccccc1F
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?