Poly[(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)[2-methyl-6-(1-methylethyl)-1,4-phenylene](2,2,2-trifluoro-1-phenylethylidene)[3-methyl-5-(1-methylethyl)-1,4-phe |
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