IUPAC:3-[(4-aminophenyl)methyl]-2,4-dioxo-3-azatricyclo[7.3.1.0^{5,13}]trideca-1(12),5(13),6,8,10-pentaene-7-sulfonic acid sodium
IUPAC:3-[(4-aminophenyl)methyl]-2,4-dioxo-3-azatricyclo[7.3.1.0^{5,13}]trideca-1(12),5(13),6,8,10-pentaene-7-sulfonic acid sodium