CN(C)S(=O)(=O)c1cccc(-c2nn(-c3ccccc3)cc2/C=C(\C#N)c2nc3ccccc3[nH]2)c1
An acid's negative base-10 logarithmic dissociation constant (pKa) follows directly from its underlying thermodynamics; the negative pKa is directly proportional to its standard Gibbs free energy change. What is the negative pKa value of this molecule?