CYCLAZINES (HETEROCYCLIC HYDROCARBONS)
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BTHETERO-TRICYCLIC HYDROCARBONS/NITROGEN MONOHETERO
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BTCONDENSED HETERO-POLYCYCLIC HYDROCARBONS/ONLY NITROGEN AS HETEROATOM
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BTBRIDGED ANNULENES (ISOCYCLIC HYDROCARBONS)
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UDC547.89,9*1*1*1*2*7
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Descriptor GERCYCLAZINE (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGCYCLAZINES (HETEROCYCLIC HYDROCARBONS)
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Descriptor FRECYCLAZINES (HYDROCARBURES HÉTÉROCYCLIQUES)