C.I. Direct Red 80, hexasodium salt; C.I. direct red 80; DirectRed; hexasodium 4-hydroxy-7-[({5-hydroxy-7-sulfonato-6-[(E)-{2-sulfonato-4-[(E)-(4-sulfonatophenyl)diazenyl]phenyl}diazenyl]naphthalen-2-yl}carbamoyl)amino]-3-[(E)-{2-sulfonato-4-[(E)-(4-sulfonatophenyl)diazenyl]phenyl}diazenyl]naphthalene-2-sulfonate