CC[C@@]1(O)C(=O)OCc2c1c(Cl)c1n(c2=O)Cc2cc3ccccc3nc2-1
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?