1-hydroxy-4-[[4-[(methylsulphonyl)oxy]phenyl]amino]anthraquinone

9,10-Anthracenedione, 1-hydroxy-4-4-(methylsulfonyl)oxyphenylamino-

1-Hydroxy-4-[[4-[(methylsulfonyl)oxy]phenyl]amino]-9,10-anthracenedione