Cc1ccc(S(=O)(=O)NNC(=O)c2cc([N+](=O)[O-])c(C)c([N+](=O)[O-])c2)cc1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?