CC(C)(Oc1ccc(/C=C/C(=O)c2ccccc2)cc1)C(=O)Nc1c(Cl)cccc1Cl
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?