Using CCCc1c(OCOC)ccc(Br)c1COC1CCCCO1, O=C(C(F)(F)F)C(F)(F)F to produce CCCc1c(OCOC)ccc(C(O)(C(F)(F)F)C(F)(F)F)c1COC1CCCCO1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.