CN(C)CCNc1nc2c(c(=O)[nH]c(=O)n2C)n1CC(O)COc1ccc(Cl)cc1
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?