1H,3H-Benzo(1,2-c:4,5-c')difuran-1,3,5,7-tetrone, polymer with 4,4'-((2,2,2-trifluoro-1-(trifluoromethyl)ethylidene)bis(4,1-phenyleneoxy))bis(benzenamine) 84789-95-7 92213-48-4