CCCCCCn1c(=O)n2n(c1=O)[C@@H]1CN(S(=O)(=O)c3ccc(C)cc3)C[C@]1(O)[C@@H](OC(=O)NCc1ccco1)C2
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?