COC(=O)C1=C(O)C(C(=O)OC)[C@@]2(O)[C@@H](C(=O)OC)[C@H](C)[C@@H](C)[C@@H]1[C@@H]2C(=O)OC
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?