Cc1ccc2oc(C(=O)Nc3ccc(S(=O)(=O)N4CCCC(C)C4)cc3)cc(=O)c2c1
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?