Cc1ccc(OCC(=O)Nc2cc(NC(=O)COc3ccc(C)cc3)cc(C(=O)O)c2)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?