Using COc1ccc(Br)cn1, O=C1CCN(C(=O)OCc2ccccc2)CC1 to produce COc1ccc(C2(O)CCN(C(=O)OCc3ccccc3)CC2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.