Using Brc1ccc2[nH]ccc2c1, O=C1CCN(Cc2ccccc2)CC1 to produce Brc1ccc2[nH]cc(C3=CCN(Cc4ccccc4)CC3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.