7,7-difluoro-3,4-dimethylbicyclo[4.1.0]hepta-1,3,5-triene InChI=1/C9H8F2/c1-5-3-7-8(4-6(5)2)9(7,10)11/h3-4H,1-2H bicyclo[4.1.0]hepta-1,3,5-triene, 7,7-difluoro-3,4-dimethyl-