C[C@@H](C(=O)Nc1ccc2ccccc2c1)[C@@H]1C[C@@]1(C)[C@@H](N)c1ccccc1
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?