| Poly[(2,4,5-trioxo-1,3-imidazolidinediyl)-1,4-phenylenecarbonylimino(1,2-dioxo-1,2-ethanediyl)iminocarbonyl-1,4-phenylene(2,4,5-trioxo-1,3-imidazolidinediyl)-1,4-phenylenecarbonylimino-1,4-phenyleneoxy-1,4-phenylenesulfonyl-1,4-phenyleneoxy-1,4-phenylenei |
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