CN(C)CCCN(C(=O)COc1ccc(Cl)cc1)c1nc2cc3c(cc2s1)OCCO3.Cl
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?