(C36H24N4O7)n
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Poly(phthalidylidene-p-phenylenecarbonylhydrazocarbonyl-p-phenyleneoxy-p-phenylenecarbonylhydrazocarbonyl-p-phenylene)(8CI); 3,3-Bis[4-(chloroformyl)phenyl]phthalide-4,4'-oxybis(benzoyl hydrazide)polymer, SRU; Niplon 1/75; Poly(phthalidylidene-1,4-phenyle
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