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... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > hydrides > organic hydride > organic fundamental parent > hydrocarbon > olefin > acyclic olefin > 3-penten-1-yne

... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > hydrogen molecular entity > hydrides > organic hydride > organic fundamental parent > hydrocarbon > olefin > acyclic olefin > 3-penten-1-yne