| (subclass OrganicCompound CompoundSubstance) | Mid-level-ontology.kif 8162-8162 | |
| (subclass Urea OrganicCompound) | Mid-level-ontology.kif 8175-8175 | |
| (subclass Steroid OrganicCompound) | Mid-level-ontology.kif 8181-8181 | |
| (subclass Hydrocarbon OrganicCompound) | Mid-level-ontology.kif 8186-8186 | |
| (subclass Alcohol OrganicCompound) | Mid-level-ontology.kif 8215-8215 | |
| (subclass AminoAcid OrganicCompound) | Mid-level-ontology.kif 8299-8299 |
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