Using COCCOCCn1c2ccc(F)cc2c2cc(Br)ccc21, O=CN1CCOCC1 to produce COCCOCCn1c2ccc(Br)cc2c2cc(C=O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.