| Poly[(1,3-dihydro-1,3-dioxo-2H-isoindole-5,2-diyl)-1,4-phenyleneoxy(tricyclo[3.3.1.13,7]dec-1-yl-1,3-phenylene)oxy-1,4-phenylene(1,3-dihydro-1,3-dioxo-2H-isoindole-2,5-diyl)carbonylimino-1,4-phenyleneoxy[(1,1-dimethylethyl)-1,4-phenylene]oxy-1,4-phenylene |
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