CCN(CC)C(=O)c1ccc2c(c1)N(Cc1ccccc1)C(=O)C[S+]2[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?