3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione;5-NORBORNENE,2,3-DICARBOXYLIC ACID,ANHYDRIDE;4,7-methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3aR,4R,7S,7aS)-;InChI=1/C9H8O3/c10-8-6-4-1-2-5(3-4)7(6)9(11)12-8/h1-2,4-7H,3H2/t4-,5+,6+,7;rel-(3aR,4R,7S,7aS)-3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione;InChI=1/C9H8O3/c10-8-6-4-1-2-5(3-4)7(6)9(11)12-8/h1-2,4-7H,3H