1,3-OXAZINE,2,6-DIONE,4-METHYL,1,2,3,6-TETRAHYDRO 2H-1,3-oxazine-2,6(3H)-dione, 4-methyl- 4-methyl-2H-1,3-oxazine-2,6(3H)-dione InChI=1/C5H5NO3/c1-3-2-4(7)9-5(8)6-3/h2H,1H3,(H,6,8