4-chloro-3-[[1-[5-chloro-4-[[2-[[2-chloro-5-[(3-chloro-2-methylphenyl)carbamoyl]phenyl]diazenyl]-3-oxobutanoyl]amino]-2-methylanilino]-1,3-dioxobutan-2-yl]diazenyl]-N-(3-chloro-2-methylphenyl)benzamide