CC(C)CN(C(=O)COC(=O)Cc1ccc(Cl)cc1)c1c(N)n(Cc2ccccc2)c(=O)[nH]c1=O
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?