Cc1ccc(CNC(=O)c2cnn3c(O)c(Cc4ccc(Cl)cc4)c(C)nc23)cc1
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?