e/Cyclobutyne

Information
has gloss	eng: Cyclobutyne (C4H4) is a hydrocarbon molecule containing a triple bond (acetylenic bond) within a four carbon atom ring. It is very unstable and was first synthesized in the United States by incorporating it in a metal compound containing osmium atoms. It is very unstable due to its high ring strain.
lexicalization	eng: Cyclobutyne
instance of	e/Alkyne