CC1CC(C)CN(S(=O)(=O)c2ccc(C(=O)Nc3sccc3C(N)=O)cc2)C1
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?