Using CCCCBr, COc1cc2c(c(Br)c1OC)CCNCC2c1ccccc1 to produce CCCCN1CCc2c(cc(OC)c(OC)c2Br)C(c2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.