Using O=c1ccc(-c2cc(F)cc(F)c2)nn1Cc1cccc(-c2ncco2)c1, O=C1CCC(=O)N1Br to produce O=c1ccc(-c2cc(F)cc(F)c2)nn1Cc1cccc(-c2ncc(Br)o2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.