Cc1ccc(C2NC(c3ccc(C)cc3)C([N+](=O)[O-])C(C)(C)C2[N+](=O)[O-])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?