| Poly[(1,3-dihydro-1,3-dioxo-2H-isoindole-5,2-diyl)(3,3',5,5'-tetramethyl[1,1'-biphenyl]-4,4'-diyl)(1,3-dihydro-1,3-dioxo-2H-isoindole-2,5-diyl)carbonyloxy(2,6-dimethyl-1,4-phenylene)[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene](3,5-dimethyl-1,4-phenylen |
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