CCO[C@H]1OC(C(=O)NCc2nc3ccccc3[nH]2)=C[C@@H](c2ccc(C(F)(F)F)cc2)[C@@H]1CCCO
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?