Using CC(C)(C)OC(=O)N1CCC2(CC1)CCN(Cc1ccc(Br)cc1)C2=O to produce O=C1N(Cc2ccc(Br)cc2)CCC12CCNCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.