Cc1ccc(C(=O)N/N=C(\N=N\c2ccc([N+](=O)[O-])cc2)c2ccc(N(CCC#N)CCC#N)cc2C)cc1
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?