Cc1cc(CNC(=O)[C@H](C)[C@H]2C[C@]2(C)[C@H](NC(=O)OCc2ccccc2)c2ccccc2)nn1C
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?