Cc1cc(C)c2c(c1)cc(C)c1nnc(SCC(=O)Nc3cc(C)on3)n12
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?