What is "dictyopterene"

Dictyopterenes are a group of chemical compounds that are naturally present in marine and freshwater environments. They are sexual attractants, or pheromones, found with several species of brown algae ( Phaeophyceae). The chemical formula of dictyopterene A is trans-1-(trans-1-hexenyl)-2-vinylcyclopropane. The chemical formula of dictyopterene C' is 6-butylcyclohepta-1,4-diene. Dictyopterene A can be extracted from the essential oil of algae of the genus Dictyopteris.