4,7-methano-1H-isoindole-1,3(2H)-dione, hexahydro-2-methyl-8-(1-methylethylidene)-, (3aR,4R,7S,7aS)- InChI=1/C13H17NO2/c1-6(2)9-7-4-5-8(9)11-10(7)12(15)14(3)13(11)16/h7-8,10-11H,4-5H2,1-3H3/t7-,8+,10+,11 rel-(3aR,4R,7S,7aS)-2-methyl-8-(1-methylethylidene)hexahydro-1H-4,7-methanoisoindole-1,3-dione