CCO/C(O)=C1\C(C)=N[C@@]2(O)c3ccccc3C(=O)[C@@]12O
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?