Using CC1(C)C=C(C(F)(F)F)c2cc(Cl)c(O)cc2O1, OCCCBr to produce CC1(C)C=C(C(F)(F)F)c2cc(Cl)c(OCCCO)cc2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.