Cc1ccc(NC(=O)CC2C(=O)N(Cc3ccccc3)C(=S)N2NC(=O)c2ccccc2)c(C)c1
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?