1,3-OXAZINE,2,6-DIONE,4,5-(2-NORBORNENYL),PERHYDRO 4a,5,8,8a-tetrahydro-2H-5,8-methano-3,1-benzoxazine-2,4(1H)-dione 5,8-methano-2H-3,1-benzoxazine-2,4(1H)-dione, 4a,5,8,8a-tetrahydro- InChI=1/C9H9NO3/c11-8-6-4-1-2-5(3-4)7(6)10-9(12)13-8/h1-2,4-7H,3H2,(H,10,12