Cc1ccc([N+](=O)[O-])cc1NC(=O)C(=O)C(C(=O)c1ccccc1F)C1OC(=O)c2ccccc21
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?