CC(C(=O)OCC(=O)Nc1ccc(S(N)(=O)=O)cc1)N1C(=O)c2ccccc2C1=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 negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?