CN(C)c1ccc(-c2c(C#N)c(S)n(NS(=O)(=O)c3ccccc3)c(=O)c2C#N)cc1
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?