N,N'-ビス[4-{ビス（3－メチルフェニル）アミノ}フェニル]-N,N'-ジフェニルー[1,1’－ビフェニル]ー4,4’-ジアミン[1,1'-Biphnyl]-4,4'-diamine,N4,N4'-bis 4-[bis(3-methylphenyl)aminophenyl]-N4,N4'-diphenyl