Cc1ccc(S(=O)(=O)N(C)c2ccc(OCC(=O)Nc3ccc(C(=O)N(C)C)cc3)cc2)cc1C
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?