Using CCCCBr, CCCc1c2c(cc(OC)c1OC)C(c1ccccc1)CNCC2 to produce CCCCN1CCc2c(cc(OC)c(OC)c2CCC)C(c2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.