COc1ccccc1/N=N/C(=N/NC(=O)c1ccc(C)cc1)c1ccc(N(CCC#N)CCC#N)cc1OC
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?