Using Cc1c(Br)ccc2c1N(Cc1ccc3ccccc3c1)C(=O)C2=O to produce Cc1c(Br)ccc2c1N(Cc1ccc3ccccc3c1)C(=O)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.