Using FCCBr, CC(C)(C)C(=O)Oc1c(-c2c(F)ccc(F)c2Cl)c(=O)[nH]c2nccnc12 to produce CC(C)(C)C(=O)Oc1c(-c2c(F)ccc(F)c2Cl)c(=O)n(CCF)c2nccnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.