130189-67-2 BRN 4221221 Dibenzo(b,f)(1,5)diazocine-2,8-diamine, N,N'-bis((4-methoxyphenyl)methylene)-6,12-diphenyl- N,N'-Bis((4-methoxyphenyl)methylene)-6,12-diphenyldibenzo(b,f)(1,5)diazocine-2,8-diamine