Preferred Label : megathyrin B;
MeSH note : isolated from Isodon megathyrsus; structure in first source;
MeSH synonym : 1,7,11,15-tetrahydroxy-ent-7,20-epoxykaur-16-ene;
Is substance : O;
Origin ID : C117516;
UMLS CUI : C0763900;
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