1,2,3,6-tetrahydro-4-(4-methylpent-3-enyl)phthalic anhydride;1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-5-(4-methyl-3-pentenyl)-;4-(4-Methyl-3-pentenyl)-4-cyclohexene-1,2-dicarboxylic anhydride;5-(4-Methyl-3-pentenyl)-4-cyclohexene-1,2-dicarboxylic anh