Using Brc1ccc(OC2CCNCC2)cc1, BrCCc1c[nH]c2ccccc12 to produce Brc1ccc(OC2CCN(CCc3c[nH]c4ccccc34)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.