CC(C)(C)OC(=O)NCCCCCc1nnc(SCC(=O)Nc2ccc(Br)cc2)o1
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?