CCC1(C)Cc2c(sc3nnn(CC(=O)Nc4ccc(C)cc4)c(=O)c23)CO1
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?