CC(=O)Nc1cc(-c2nn(C)c(=O)c3ccccc23)ccc1N1CCOCC1
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?