3,11-Bis(bromoacetyl)-7,14,15-trithia-3,11-diazadispiro[5.1.5.2]pentadecane AIDS-127719 AIDS127719 NSC177845 {7,14,15-Trithia-3,11-diazadispiro[5.1.5.2]pentadecane,} 3, 11-bis(bromoacetyl)-