(3aR,7aS)-hexahydro-2-benzofuran-1,3-dione 1,3-isobenzofurandione, hexahydro-, (3aR,7aS)- InChI=1/C8H10O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h5-6H,1-4H2/t5-,6 rel-(3aR,7aS)-hexahydro-2-benzofuran-1,3-dione