Using BrC(Br)(Br)Br, O=S(=O)(Oc1cc2c(cc1CO)CCCC2)C(F)(F)F to produce O=S(=O)(Oc1cc2c(cc1CBr)CCCC2)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.