111216-02-5 113676-63-4 122989-11-1 159602-17-2 82643-33-2 84170-74-1 Poly(oxy(methyl-1,2-ethanediyl)), alpha,alpha'-(2,2-dimethyl-1,3-propanediyl)bis(omega-((1-oxo-2-propenyl)oxy)-