1,5-Bis[[4-[(1-anthraquinonyl)amino]-1-anthraquinonyl]amino]-9,10-anthracenedione

1,5-bis[[4-[(9,10-dihydro-9,10-dioxo-1-anthryl)amino]-9,10-dihydro-9,10-dioxo-1-anthryl]amino]anthraquinone