Cc1nc(SCC(=O)Nc2ccc(F)cc2)c(C#N)c(C)c1CC(=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?