CC(O)C1/C=C/C=C\C(=O)OC2CC3OC4C5OC5(C)C(O)CC4(COC(=O)C(O)C(C)CCO1)C2(C)C31CO1
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?