AZAPENTALENES (HETEROCYCLIC HYDROCARBONS)
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BTHETERO-BICYCLIC HYDROCARBONS/NITROGEN MONOHETERO
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BTCONDENSED HETERO-POLYCYCLIC HYDROCARBONS/ONLY NITROGEN AS HETEROATOM
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BTPENTALENE (ISO-POLYCYCLIC HYDROCARBONS)
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UDC547.89,9*1*1*1*1*4
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Descriptor GERAZAPENTALENE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGAZAPENTALENES (HETEROCYCLIC HYDROCARBONS)
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Descriptor FREAZAPENTALÈNES (HYDROCARBURES HÉTÉROCYCLIQUES)
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Variant GERPENTALENE/AZAPENTALENE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Variant ENGPENTALENES/AZAPENTALENES (HETEROCYCLIC HYDROCARBONS)
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Variant FREPENTALÈNES/AZAPENTALÈNES (HYDROCARBURES HÉTÉROCYCLIQUES)