(7,7'-BI-1H-1,5-BENZODIAZEPINE)-2,2'-DICARBONITRILE, 2,2',3,3',4,4',5,5'-OCTAHYD (7,7'-Bi-1H-1,5-benzodiazepine)-2,2'-dicarbonitrile, 2,2',3,3',4,4',5,5'-octahydro-4,4'-dimethyl- 87896-42-2 AN-21