CC(C)CC1(C)NC(=O)N(Cc2cc([N+](=O)[O-])cc3c2OCOC3)C1=O
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?