6-hydroxy-2-methyl-octan-4-one

2-ethoxy-2,3,4,4a,5,8a-hexahydropyrano[2,3-b]pyran

3-(4-methylphenoxy)propanal

4-(2-chloroethoxymethyl)-2-ethenyl-1,3-dioxolane

7a-ethenyl-3,4,4a,5,6,7-hexahydro-2H-pyrano[2,3-b]pyrrole