Cc1cccc(NC(=S)N(Cc2c(C)nn(C)c2C)C2CC(=O)N(c3cccc(C)c3)C2=O)c1
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?