CCOc1ccccc1NC(=O)CC(c1ccc(F)cc1)N1Cc2ccccc2C1=O
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?