Using NNc1ccc(Br)cc1, O=C(Cc1ccccc1)C(=O)c1ccccc1 to produce Brc1ccc(-n2nc(-c3ccccc3)cc2-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.