O=C1CC(CC(=O)c2ccc(Br)cc2)C(O)=C1C(=O)c1ccc(Br)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?