COC(=O)OCC1OC(N2C(=O)NC(=O)C(I)C2N=[N+]=[N-])CC1OC(=O)OC
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?