CC(C)(C)n1nnnc1SCC(=O)Nc1nn(-c2ccccc2)nc1C(N)=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?