CC(C)C(NC(=O)OC(C)(C)C)C(=O)N1CCCC1C(=O)NC(Cc1ccccc1)C(N)=O
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?