CN(C)C1N(C(=O)c2ccccc2)N=C2c3ccccc3S(=O)(=O)N21
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?