O=C(O)c1ccc(COc2ccccc2/C=C2\NC(=O)N(Cc3ccc(F)cc3)C2=O)cc1
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?