2-[2-(1,3-dioxolan-2-yl)ethyl]cyclohepta-3,5-dien-1-one

1-ethoxy-2-phenylcyclohepta-1,3,5-triene

2-methylcycloheptan-1-one

2-methylbicyclo[3.2.2]nona-2,6-dien-4-one

cyclopentylcycloheptane