Synonyms: 2H-Indeno[1,2-b]furan-2-one,3-[[(2,5-dihydro-4-methyl-5-oxo-2-furanyl)oxy]methylene]-3,3a,4,8b-tetrahydro-,[3E(R*),3aa,8ba]-(?à)-; 2H-Indeno[1,2-b]furan-2-one,3-[[(2,5-dihydro-4-methyl-5-oxo-2-furanyl)oxy]methylene]-3,3a,4,8b-tetrahydro-,[3E(R*),3aa,8ba]-; GR 24;