CCOC(=O)c1cccc(-n2cccc2/C=C2\NC(=O)N(CC(=O)O)C2=O)c1
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?