COC(C/C=C\C=C\CC/C=C/CC(C)/C=C/C(=C\C(=O)O)CC(=O)O)/C(C)=C\C=C(/C)C(=O)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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?