CC(C)(C)OC(=O)C1C(=O)NC(=O)CC1C(OCc1ccccc1)C(OCc1ccccc1)C(COCc1ccccc1)OCc1ccccc1
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?