| Poly[(2,2'-diphenyl[6,6'-biquinoxaline]-3,3'-diyl)-1,4-phenyleneoxycarbonyl-1,3-phenylene(1,3-dihydro-1,3-dioxo-2H-isoindole-2,5-diyl)[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene](1,3-dihydro-1,3-dioxo-2H-isoindole-5,2-diyl)-1,3-phenylenecarbonyloxy-1,4 |
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