CCOC(=O)c1nn(-c2ccccc2C)c(=O)cc1OCC(=O)Nc1cccc(OC)c1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?