CC(=O)Nc1ccc(S(=O)(=O)N(C)CC(=O)OCC(=O)N2CCN(C(=O)c3ccco3)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?