Cc1noc(NS(=O)(=O)c2ccc(NC(=O)/C=C/c3ccc(C(C)C)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?