Direct Red 80

Hexasodium;4-hydroxy-7-[[5-hydroxy-7-sulfonato-6-[[2-sulfonato-4-[ (4-sulfonatophenyl) diazenyl]phenyl]diazenyl]naphthalen-2-yl]carbamoylamino]-3-[[2-sulfonato-4-[ (4-sulfonatophenyl) diazenyl]phenyl]diazenyl]naphthalene-2-sulfonate

C1=CC (=CC=C1N=NC2=CC (=C (C=C2) N=NC3=C (C=C4C=C (C=CC4=C3O) NC (=O) NC5=CC6=CC (=C (C (=C6C=C5) O) N=NC7=C (C=C (C=C7) N=NC8=CC=C (C=C8) S (=O) (=O) [O-]) S (=O) (=O) [O-]) S (=O) (=O) [O-]) S (=O) (=O) [O-]) S (=O) (=O) [O-]) S (=O) (=O) [O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+]