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