| Poly[(1,3-dihydro-1,3-dioxo-2H-isoindole-5,2-diyl)-1,3-phenylenesulfonyl-1,3-phenylene(1,3-dihydro-1,3-dioxo-2H-isoindole-2,5-diyl)carbonylimino-1,3-phenylene(1-oxo-2-propene-1,3-diyl)-1,4-phenylene(3-oxo-1-propene-1,3-diyl)-1,3-phenyleneiminocarbonyl] |
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