CC(C)(C)C(=O)NCc1ccc(C(=O)CSc2nnc(-c3ccncc3)n2C2CC2)s1
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?