6,7-bis(methylene)tricyclo[3.2.2.0~2,4~]nonane InChI=1/C11H14/c1-6-7(2)9-4-3-8(6)10-5-11(9)10/h8-11H,1-5H TRICYCLO(4,4,1,0)NONANE,3,4-DIMETHYLENE tricyclo[3.2.2.0~2,4~]nonane, 6,7-bis(methylene)-