HETERO-TETRACYCLIC HYDROCARBONS/NITROGEN DIHETERO
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BTHETERO-POLYCYCLIC HYDROCARBONS/NITROGEN DIHETERO
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BTHETERO-TETRACYCLIC HYDROCARBONS
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UDC547.89,9*1*1*2*3
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Descriptor GERHETERO-TETRACYCLISCHE KOHLENWASSERSTOFFE/STICKSTOFF-DIHETERO
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Descriptor ENGHETERO-TETRACYCLIC HYDROCARBONS/NITROGEN DIHETERO
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Descriptor FREHYDROCARBURES HÉTÉROTÉTRACYCLIQUES/AZOTE-DIHÉTÉRO
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Variant GERHETERO-TETRAZYKLISCHE KOHLENWASSERSTOFFE/STICKSTOFF-DIHETERO
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Variant GERHETEROTETRACYCLEN/STICKSTOFF-DIHETERO
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Variant GERHETEROTETRAZYKLEN/STICKSTOFF-DIHETERO
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Variant ENGHETEROTETRACYCLES/NITROGEN DIHETERO
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Variant FREHÉTÉROTETRACYCLES/AZOTE-DIHÉTÉRO
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NTBIQUINOLYLCYANINES + BIQUINOLYLQUINOLINE (HETEROCYCLIC HYDROCARBONS)
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NTINDOLO-QUINOLIZIDINE AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)