130189-68-3 BRN 4220045 Dibenzo(b,f)(1,5)diazocine-2,8-diamine, N,N'-bis((4-chlorophenyl)methylene)-6,12-diphenyl- N,N'-Bis((4-chlorophenyl)methylene)-6,12-diphenyldibenzo(b,f)(1,5)diazocine-2,8-diamine