(5R)-3-((5S)-5-Ethyldihydro-2(3H)-furanylidene)-5-methyl-2,4(3H,5H)-furandione 2,4(3H,5H)-Furandione, 3-((5S)-5-ethyldihydro-2(3H)-furanylidene)-5-methyl-, (5R)- 2,4(3H,5H)-Furandione, 3-(5-ethyldihydro-2(3H)-furanylidene)-5-methyl-, (R-(R*,S*))- 570-03-6 Terrestric acid