5-Isobenzofurancarboxylic acid,1,3-dihydro-1,3-dioxo-,2-[(2-methyl- 1-oxo-2-propenyl)oxy]ethyl ester,polymer with 1,2-ethanediyl bis(2-methyl-2-propenoate) and methyl 2-methyl-2-propenoate
5-Isobenzofurancarboxylic acid,1,3-dihydro-1,3-dioxo-,2-[(2-methyl- 1-oxo-2-propenyl)oxy]ethyl ester,polymer with 1,2-ethanediyl bis(2-methyl-2-propenoate) and methyl 2-methyl-2-propenoate