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ovalene

n. (context organic compound English) A polycyclic aromatic hydrocarbon containing eight fused benzene rings.

Wikipedia
Ovalene

Ovalene is a polycyclic aromatic hydrocarbon with the formula CH, which consists of ten peri-fused six-membered rings. It is very similar to coronene.

Ovalene is a reddish-orange compound. It is sparingly soluble in solvents such as benzene, toluene, and dichloromethane. Its solutions have a green fluorescence under UV light.

Ovalene has been shown to form in deep-sea hydrothermal vent areas and in the hydrocracking process of petroleum refining.