Using O=C(Cl)c1ccc(CN2CCOCC2)o1, Nc1nc2[nH]nc(-c3ccccc3Br)c2s1 to produce O=C(Nc1nc2[nH]nc(-c3ccccc3Br)c2s1)c1ccc(CN2CCOCC2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.