Cc1ccccc1Oc1cc(NC(=O)CCCn2nc(C)c([N+](=O)[O-])c2C)cc([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?