IUPAC:tetrasodium 4-amino-6-[(1E)-2-{4'-[(1E)-2-(8-amino-1-hydroxy-5,7-disulfonatonaphthalen-2-yl)diazen-1-yl]-3,3'-dimethyl-[1,1'-biphenyl]-4-yl}diazen-1-yl]-5-hydroxynaphthalene-1,3-disulfonate
IUPAC:tetrasodium 4-amino-6-[(1E)-2-{4'-[(1E)-2-(8-amino-1-hydroxy-5,7-disulfonatonaphthalen-2-yl)diazen-1-yl]-3,3'-dimethyl-[1,1'-biphenyl]-4-yl}diazen-1-yl]-5-hydroxynaphthalene-1,3-disulfonate