CC1(C)Cc2c(sc(NC(=O)c3ccc(C(=O)c4ccccc4)cc3)c2C(N)=O)C(C)(C)N1
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 pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the pka value of this molecule?