CN(C)CCCN(C)C(=O)c1cccc(-n2nc(C(C)(C)C)cc2NC(=O)Nc2cccc3ccccc23)c1
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?