Using COc1ccc(CCl)cc1, O=c1[nH]c2ncc(Br)cc2c2ncnn12 to produce COc1ccc(Cn2c(=O)n3ncnc3c3cc(Br)cnc32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.