alloalantolactone

== English == === Etymology === From allo- +‎ alantolactone. === Noun === alloalantolactone (uncountable) (organic chemistry) The sesquiterpenoid lactone (3aR,8aR,9aR)-5,8a-dimethyl-3-methylidene-4,6,7,8,9,9a-hexahydro-3aH-benzo[f][1]benzofuran-2-one