Cc1ccc(Cl)cc1N1CCN(C(=O)CCNS(=O)(=O)c2ccc3c(c2)CCN3C(=O)C2CC2)CC1
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?