Using CC(C)(C)OC(=O)NCCn1c(=O)c(C(C)(C)C)nc2ccc(Br)cc21 to produce CC(C)(C)c1nc2ccc(Br)cc2n(CCN)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.