Using O=C(O)c1cccc(Br)c1, Nc1ccc(OCCN2CCOCC2)c2ccccc12 to produce O=C(Nc1ccc(OCCN2CCOCC2)c2ccccc12)c1cccc(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.