Using Clc1nc[nH]c1Cl, O=C1c2ccccc2C(=O)c2cc(CBr)ccc21 to produce Cc1ccc2c(c1-n1cnc(Cl)c1Cl)C(=O)c1ccccc1C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.