COC(=O)C(CC(=O)Nc1ccc(C)cc1)C(=O)C(=O)Nc1c(C(C)C)cccc1C(C)C
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?