COCCNC(=O)CN(c1cc(Cl)ccc1OC)S(=O)(=O)c1ccc(C)c([N+](=O)[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?