Cc1ccc(-c2nc(NC(=O)c3cc(C(C)(C)C)nn3C)sc2C)cc1Cl
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?