CCOc1ccc2nc(NC(=O)/C(CC(=O)CC(C3=C(O)c4ccccc4CC3=O)c3ccccc3)=N\O)sc2c1
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?