IUPAC:1,3,4,9-tetrahydroxy-11-(-lambda5-diazynylidene)-2-methyl-5,10-dioxo-1H,2H,3H,4H,5H,10H,11H-benzo[b]fluoren-2-yl acetate
IUPAC:1,3,4,9-tetrahydroxy-11-(-lambda5-diazynylidene)-2-methyl-5,10-dioxo-1H,2H,3H,4H,5H,10H,11H-benzo[b]fluoren-2-yl acetate