CC(NC(=O)C(Cc1ccc(OC(=O)c2ccccc2)cc1)NC(=O)OC(C)(C)C)C(=O)NCC(=O)NC(Cc1ccccc1)NC(=O)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?