Using O=C(Nc1ccc(Br)cc1)Oc1ccc2c(c1)CCCN2Cc1ccccc1 to produce O=C(Nc1ccc(Br)cc1)Oc1ccc2c(c1)CCCN2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.