CCN(C(=O)C(C)OC(=O)C1C(C(=O)OC)=C(C)N=C(C)/C1=C(/O)OC)c1ccccc1
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?