Using BrCCOCCBr, NCC1(c2ccc(OCCCN3CCCC3)cc2)CCOCC1 to produce c1cc(C2(CN3CCOCC3)CCOCC2)ccc1OCCCN1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.