Cc1nc(/N=N/c2cc([N+](=O)[O-])ccc2Cl)c(COP(=O)([O-])[O-])c(C=O)c1O.[Na+].[Na+]
The negative base-10 logarithmic of dissociation constant (pKa) for an acid is a direct consequence of the underlying thermodynamics of the dissociation reaction; the negative pKa value is directly proportional to the standard Gibbs free energy change for the reaction. What is the negative pKa value of this molecule?