CC(=O)O.CCOC(=O)c1c(C)[nH]c2c1c(CN(C)C)c(O)c1nc(C)c(C)nc12
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?