1(3H)-isobenzofuranone, 3-hydroxy-4-methyl- 3-hydroxy-4-methyl-2-benzofuran-1(3H)-one InChI=1/C9H8O3/c1-5-3-2-4-6-7(5)9(11)12-8(6)10/h2-4,9,11H,1H