4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-, polymer with ethenylbenzene, ethenylmethylbenzene, 1H-indene, 3-methylene-6-(1-methylethyl)cyclohexene, (1-methylethenyl)benzene, 1-methyl-4-(1-methylethenyl)cyclohexene, 1-methyl-4-(1-methylethyl)-1,3-cyclohe