CCCCCCC1(C)NC(=O)N(C(C)C(=O)Nc2ccc(N3CCOCC3)cc2)C1=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?