CCN(CC)S(=O)(=O)c1cc(NC(=O)C(C)N(C)CC(=O)Nc2c(C)cccc2C)ccc1C
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?