N#Cc1c(-c2ccccc2)c(C#N)c(=O)n(NS(=O)(=O)c2ccccc2)c1O
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?