IUPAC:sodium 4-[(1E)-2-(3-amino-4-nitrophenyl)diazen-1-yl]-5-hydroxy-13-sulfonato-2lambda3,17lambda3-dioxa-9,10lambda5-diaza-1-cupratetracyclo[8.7.0.0^{3,8}.0^{11,16}]heptadeca-3,5,7,9,11(16),12,14-heptaene-1,1-bis(ylium)-2,17-diid-10-yl
IUPAC:sodium 4-[(1E)-2-(3-amino-4-nitrophenyl)diazen-1-yl]-5-hydroxy-13-sulfonato-2lambda3,17lambda3-dioxa-9,10lambda5-diaza-1-cupratetracyclo[8.7.0.0^{3,8}.0^{11,16}]heptadeca-3,5,7,9,11(16),12,14-heptaene-1,1-bis(ylium)-2,17-diid-10-yl