Cc1ccc(/N=N/c2c(C)nn(C(=O)CC(=O)Nc3ccccc3)c2C)cc1C
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?