CNC(C)C(=O)NC(C(=O)N1CCCC1C(=O)NNc1ccccc1)C(C)C.O=CO
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?