CCc1cccc2c1NC(=O)[C@]21[C@@H]2C(=O)N(Cc3ccccc3)C(=O)[C@@H]2[C@@H]2CCCN21
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?