What is the molecular formula of the compound with this IUPAC name 4-[[4-[2-[1-[2-[2-[4-[(4-cyanophenyl)diazenyl]-N-ethylanilino]ethoxy]naphthalen-1-yl]naphthalen-2-yl]oxyethyl-ethylamino]phenyl]diazenyl]benzonitrile ?