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Poly[oxy(methyl-1,2-ethanediyl)],a,a'-(2,2-dimethyl-1,3-propanediyl)bis[w-[(1-oxo-2-propen-1-yl)oxy

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Poly[oxy(methyl-1,2-ethanediyl)],a,a'-(2,2-dimethyl-1,3-propanediyl)bis[w-[(1-oxo-2-propen-1-yl)oxy