CC(C)CN(C(=O)CN1CCN(S(=O)(=O)c2ccccc2)CC1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
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?