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CAS Number 68611-34-7 (Poly[oxy(methyl-1,2-ethanediyl)], α,α',α''- 1,2,3-propanetriyltris[ω-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)], isocyanate-terminated)