Using O=C(c1ccc(Cl)cc1)c1ccc(CBr)cc1, Cn1ncc2c(c1=O)CCCN2 to produce Cn1ncc2c(c1=O)CCCN2Cc1ccc(C(=O)c2ccc(Cl)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.