CCOC(=O)c1ccccc1NC1c2ccccc2C(=O)N1C1CCN(C(=O)OCC)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?