CCN(CC)S(=O)(=O)c1ccc2c(c1)nc(CCC(=O)OCC(=O)Nc1cc(Cl)cc(Cl)c1)n2C
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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?