class=skin-invert-image|thumb|right|200px|Steroid skeleton. Carbons 18 and above can be absent. class=skin-invert-image|thumb|right|150px|Androstenedione class=skin-invert-image|thumb|right|150px|Androsterone class=skin-invert-image|thumb|right|150px|Estrone
via PubMed
class=skin-invert-image|thumb|right|200px|Steroid skeleton. Carbons 18 and above can be absent. class=skin-invert-image|thumb|right|150px|Androstenedione class=skin-invert-image|thumb|right|150px|Androsterone class=skin-invert-image|thumb|right|150px|Estrone
A ketosteroid, or an oxosteroid, is a steroid in which a hydrogen atom has been replaced with a ketone (C=O) group.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).