1H-1,5-BENZODIAZEPINE-2-CARBONITRILE, 7,7'-OXYBIS(2,3,4,5-TETRAHYDRO-4-PHENYL- 7,7'-Oxybis(2,3,4,5-tetrahydro-4-phenyl-1H-1,5-benzodiazepine-2-carbonitrile) 87896-38-6