... > chemical entity > molecular entity > polyatomic entity > molecule > cyclic compound > heterocyclic compound > organic heterocyclic compound > organic heteropolycyclic compound > organic heterobicyclic compound > mancude organic heterobicyclic parent > 1H-pyrazolo[4,3-d]pyrimidine

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... > chemical entity > molecular entity > polyatomic entity > heteroatomic molecular entity > hydrides > organic hydride > organic fundamental parent > heterocyclic organic fundamental parent > mancude organic heterocyclic parent > mancude organic heterobicyclic parent > 1H-pyrazolo[4,3-d]pyrimidine

... > 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 heterobicyclic parent > 1H-pyrazolo[4,3-d]pyrimidine