Using O=Cc1cc(F)c(Br)c(F)c1, CCCC1CCC(C(CO)CO)CC1 to produce CCCC1CCC(C2COC(c3cc(F)c(Br)c(F)c3)OC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.