C=CCn1c(O)c(N=NC(S)=Nc2ccccc2C)c2cc(S(=O)(=O)N3CCOCC3)ccc21
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?