HETERO-TRICYCLIC HYDROCARBONS/OXYGEN DIHETERO
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BTHETERO-POLYCYCLIC HYDROCARBONS/OXYGEN DIHETERO
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BTHETERO-TRICYCLIC HYDROCARBONS
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UDC547.89,9*1*0*2*2
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Descriptor GERHETERO-TRICYCLISCHE KOHLENWASSERSTOFFE/SAUERSTOFF-DIHETERO
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Descriptor ENGHETERO-TRICYCLIC HYDROCARBONS/OXYGEN DIHETERO
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Descriptor FREHYDROCARBURES HÉTÉROTRICYCLIQUES/OXYGÈNE-DIHÉTÉRO
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Variant GERHETERO-TRIZYKLISCHE KOHLENWASSERSTOFFE/SAUERSTOFF-DIHETERO
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Variant GERHETEROTRICYCLEN/SAUERSTOFF-DIHETERO
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Variant GERHETEROTRIZYKLEN/SAUERSTOFF-DIHETERO
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Variant ENGHETEROTRICYCLES/OXYGEN DIHETERO
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Variant FREHÉTÉROTRICYCLES/OXYGÈNE-DIHÉTÉRO
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NTDIBENZODIOXINS (HETEROCYCLIC HYDROCARBONS)
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NTFUROCOUMARINS AND DERIVATIVES (HETEROCYCLIC HYDROCARBONS)