2-Formyl-5-methoxy-9,10-dioxo-6-(2-oxopropyl)-9,10-dihydro-1-anthracenyl acetate AIDS-133116 AIDS133116 Acetic {acid,[2-formyl-9,10-dihydro-5-methoxy-9,10-} dioxo-6-(2-oxopropyl)-1-anthracenyl\] ester NSC628336