2-Propenoic acid, 2-methyl-, polymer with methyl 2-methyl-2-propenoate, 2-methylpropyl 2-methyl-2-propenoate and rel-(1R,2R,4R)-1,7,7-trimethylbicyclo(2.2.1)hept-2-yl 2-methyl-2-propenoate 68005-08-3