Using Cn1c(CNc2ccc(C#N)cc2)nc2cc(C(C)(N)C(=O)N3CCCC3)ccc21, CC(C)(C)OC(=O)C(Br)CCBr to produce Cn1c(CNc2ccc(C#N)cc2)nc2cc(C(C)(C(=O)N3CCCC3)N3CCC3C(=O)OC(C)(C)C)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.