(4Z)-4-[[2-chloro-5-(trifluoromethyl)phenyl]hydrazinylidene]-N-[2,5-dichloro-4-[[(4E)-4-[[2-chloro-5-(trifluoromethyl)phenyl]hydrazinylidene]-3-oxo-naphthalene-2-carbonyl]amino]phenyl]-3-oxo-naphthalene-2-carboxamide