Cc1c(Cl)ccc2c(C(=O)Nc3cc(C(C)(C)C)on3)cc(-c3ccccn3)nc12
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?