Cc1ccc(CNC(=O)c2nnn(CC(=O)Nc3cc(C)cc(C)c3)c2N)cc1
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?