Using COc1ccc2nccc(Br)c2n1, CC(C)(C)OC(=O)N1CCC(=O)CC1 to produce COc1ccc2nccc(C3(O)CCN(C(=O)OC(C)(C)C)CC3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.