CS(=O)(=O)N1CCC2(CC1)CN(C(=O)Nc1cccc(C#N)c1)C2
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?