| Poly[(2,4,5-trioxo-1,3-imidazolidinediyl)-1,4-phenylenecarbonylhydrazocarbonyl-1,4-phenylene(2,4,5-trioxo-1,3-imidazolidinediyl)-1,4-phenylenecarbonylimino-1,4-phenyleneoxy-1,4-phenylenesulfonyl-1,4-phenyleneoxy-1,4-phenyleneiminocarbonyl-1,4-phenylene] |
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