Cc1ccc2nc(N/N=C\c3ccc([N+](=O)[O-])o3)nc(-c3ccccc3)c2c1
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?