프로펠레인
[[File:Propellanes.png|thumb|300px|right|Some propellanes. From left to right: [1.1.1]propellane, [2.2.2]propellane, and 1,3-dehydroadamantane (a methylene-bridged derivative of [3.3.1]propellane).]]
[[File:Propellanes.png|thumb|300px|right|Some propellanes. From left to right: [1.1.1]propellane, [2.2.2]propellane, and 1,3-dehydroadamantane (a methylene-bridged derivative of [3.3.1]propellane).]]
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).