CC(=O)OC1(C)CC(=O)OCC23CCC(C)=CC2OC2CC(OC(=O)/C=C\C=C\C(C(C)O)OCC1O)C3(C)C21CO1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?