Cc1ccccc1SCC(=O)OCC(=O)N(C)c1c(N)n(Cc2ccccc2)c(=O)[nH]c1=O
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?