Using COC(=O)CP(=O)(OCC(F)(F)F)OCC(F)(F)F, O=Cc1ccc(Br)cc1 to produce COC(=O)/C=C\c1ccc(Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.