CCN(CC)CCNC(=O)c1cc2cc(NC(=O)c3cc4cc([N+](=O)[O-])ccc4[nH]3)ccc2[nH]1
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?