Cc1noc(NS(=O)(=O)c2ccc(NC(=O)c3ccc4nc5ccccc5c(Nc5ccc(S(=O)(=O)Nc6onc(C)c6C)cc5)c4c3)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?