CC(=O)C1(O)CCC2(O)C3(O)CC=C4CC(O)CCC4(C)C3CC(OC(=O)c3ccc(O)cc3)C12C
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?