Cc1noc(NS(=O)(=O)c2ccc(NC(=O)c3ccc(N4C(=O)c5ccccc5C4=O)cc3)cc2)c1C
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?