CC(=O)N1CCN(S(=O)(=O)c2cccc(C(=O)NNC(=O)COc3ccc(Cl)cc3C)c2)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?