Cc1noc(C)c1S(=O)(=O)Nc1c(C)n(C)n(-c2ccccc2)c1=O
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?