(2S*,3S*,3aS*,6S*,7aR*)-3-Hydroxy-2-[(2R*,3S*)-3-isopropyloxiran-2-yl]-3,6-dimethyl-3,3a,5,6,7,7a-hexahydro-1-benzofuran-4(2H)-one

In the title compound, C15H24O4, the six-membered ring shows a distorted chair conformation and the five-membered ring adopts an envelope conformation with the C atom bearing the methyl and OH groups as the flap. In the crystal, O—H...O hydrogen bonds link the molecules into chains running along the a-axis direction.