CC(C)(C)OC(=O)NCc1ccc(CNC(=O)c2[nH]cnc2C(=O)NC2CCN(C(=O)OC(C)(C)C)CC2)cc1
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?