2,4,5,7-Tetranitro-9-fluorenone 2,4,5,7-Tetranitrofluoren-9-one 2,4,5,7-Tetranitrofluorenone 746-53-2 9H-Fluoren-9-one, 2,4,5,7-tetranitro- 9H-Fluoren-9-one, tetranitro- Fluoren-9-one, 2,4,5,7-tetranitro- NSC116721 Tetranitrofluorenone