CC1(C)Oc2ccccc2N2O[C@@H]3C(=O)N(c4ccccc4)C(=O)[C@@H]3C21c1ccccc1
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?