CCc1cccc(C(C)C)c1N1C(=O)C(=O)C(c2nc3ccccc3s2)C(=O)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?