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... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > hydrides > organic hydride > organic fundamental parent > hydrocarbon > terpene > sesquiterpene > alpha-copaene

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... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > isoprenoid > terpene > sesquiterpene > alpha-copaene

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > lipid > isoprenoid > terpene > sesquiterpene > alpha-copaene