CCCCCCNC(=O)O[C@H]1CN(C(=O)OC(C)C)N(C(=O)OC(C)C)[C@@H]2CN(S(=O)(=O)c3ccc(C)cc3)C[C@]12O
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?