Cc1noc(C)c1COc1ccc(C(=O)OCC(=O)N2CC(=O)Nc3ccccc32)cc1
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?