Using CCOC(=O)c1cc2c(cn1)[nH]c1ccccc12, Fc1ccc(Cl)c(F)c1CBr to produce CCOC(=O)c1cc2c3ccccc3n(Cc3c(F)ccc(Cl)c3F)c2cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.