O=c1[nH]c(=O)n(C2CC(O)C(CO)O2)cc1C#Cc1cc(C(F)(F)F)cc(C(F)(F)F)c1
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?