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... > chemical entity > molecular entity > polyatomic entity > molecule > organic molecule > organic cyclic compound > organic heterocyclic compound > heteroarene > monocyclic heteroarene > oxazirene

... > chemical entity > molecular entity > polyatomic entity > molecule > cyclic compound > organic cyclic compound > organic heterocyclic compound > heteroarene > monocyclic heteroarene > oxazirene

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... > chemical entity > molecular entity > polyatomic entity > molecule > cyclic compound > heterocyclic compound > heteromonocyclic compound > organic heteromonocyclic compound > mancude organic heteromonocyclic parent > oxazirene

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... > chemical entity > molecular entity > main group molecular entity > s-block molecular entity > hydrogen molecular entity > hydrides > organic hydride > organic fundamental parent > heterocyclic organic fundamental parent > mancude organic heterocyclic parent > mancude organic heteromonocyclic parent > oxazirene