CSCCC1NC2(C(=O)Nc3c(C)cc(Cl)cc32)[C@@H]2C(=O)N(C3CCCC3)C(=O)[C@H]12
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?