Using FCCBr, Cn1ncc(C(=O)N2CCOCC2)c1C(=O)Nc1ccn2nc(-c3cccc(O)c3)nc2c1 to produce Cn1ncc(C(=O)N2CCOCC2)c1C(=O)Nc1ccn2nc(-c3cccc(OCCF)c3)nc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.