| Poly[(1,3-dihydro-1,3-dioxo-2H-isoindole-2,5-diyl)oxy[1,1'-biphenyl]-4,4'-diyloxy(1,3-dihydro-1,3-dioxo-2H-isoindole-5,2-diyl)[5-(trifluoromethyl)-1,3-phenylene]oxy-1,4-phenylene(1-methylethylidene)-1,4-phenyleneoxy[5-(trifluoromethyl)-1,3-phenylene]] |
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