Cc1ccc(OCC(=O)NNC(=O)[C@@H]2CCCC[C@@H]2C(=O)O)c(Br)c1
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?