SPIRO COMPOUNDS (HETEROCYCLIC HYDROCARBONS)
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BTHETERO-POLYCYCLIC HYDROCARBONS
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UDC547.89,9*0*3
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Descriptor GERSPIROVERBINDUNGEN (HETEROCYCLISCHE KOHLENWASSERSTOFFE)
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Descriptor ENGSPIRO COMPOUNDS (HETEROCYCLIC HYDROCARBONS)
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Descriptor FRECOMPOSÉS SPIRO (HYDROCARBURES HÉTÉROCYCLIQUES)
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Variant GERHETERO-SPIROCYCLISCHE KOHLENWASSERSTOFFE
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Variant GERHETEROSPIROZYKLISCHE KOHLENWASSERSTOFFE
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Variant ENGHETERO-SPIROCYCLIC HYDROCARBONS
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Variant FREHYDROCARBURES HÉTÉROSPIROCYCLIQUES
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NTHETERO-SPIROCYCLIC HYDROCARBONS/OXYGEN DIHETERO
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NTPSEUROTINES (NATURAL SUBSTANCES)
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NTSPIROCYCLIC DERIVATIVES OF PYRAZINE (HETEROCYCLIC HYDROCARBONS)
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NTSPIROLACTONES + SITOSTEROLS AND DERIVATIVES (STEROIDS)