Using CCOC(=O)c1ncc2nc(-c3cccc(OC)c3)sc2c1O, O=C1CCC(=O)N1Br to produce CCOC(=O)c1nc(Br)c2nc(-c3cccc(OC)c3)sc2c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.