CC(=O)c1ccc(N2C(=O)[C@@H]3[C@H]4c5ccccc5C=NN4[C@H](C(C)=O)[C@@H]3C2=O)cc1
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?