| Poly[(1,3-dioxo-1H-benz[de]isoquinoline-2,6(3H)-diyl)oxy-1,4-phenylenecarbonyl-1,4-phenyleneoxy(1,3-dioxo-1H-benz[de]isoquinoline-6,2(3H)-diyl)-1,3-phenyleneoxy-1,4-phenylene[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]-1,4-phenyleneoxy-1,3-phenylene] |
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