CC(C)(C)OC(=O)NCCCC[C@@H](C(=O)N1CCN(C(=O)OC(C)(C)C)CC1)n1cc(C(CO)NC(=O)OC(C)(C)C)nn1
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?