O=C(O)CCC/C=C\C[C@@H]1CO[C@H](C(F)(F)F)O[C@@H]1c1ccccc1O
An acid's negative base-10 logarithmic dissociation constant (pka) follows directly from its underlying thermodynamics; pKa is directly proportional to its standard Gibbs free energy change. What is the pka value of this molecule?