Using COCCBr, CC(=O)c1cc(O)cc(S(F)(F)(F)(F)F)c1 to produce COCCOc1cc(C(C)=O)cc(S(F)(F)(F)(F)F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.