1,1'-(((3,3'-Dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azanylylidene))bis(methanylylidene))bis(naphthalen-2-ol) 5g

1,1'-(((3,3'-Dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azanylylidene))bis(methanylylidene))bis(naphthalen-2-ol) 5g