Cc1ccc(Cl)cc1NC(=O)C1CCCN(S(=O)(=O)c2c(C)noc2/C=C/N(C)C)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?