Using Cn1cnc(S(=O)(=O)NCCNc2ccc(C(=O)OC(C)(C)C)cc2)c1, BrCc1ccccc1 to produce Cn1cnc(S(=O)(=O)N(CCNc2ccc(C(=O)OC(C)(C)C)cc2)Cc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.