CC(C)(C)OC(=O)N1CCC(C(=O)Nc2cccc(C(=O)NCCCc3ccccc3)c2)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?