2-(9,10-dioxo-9,10-dihydro-anthracen-1-yl)-2
H-dibenzo[
de,
h]cinnoline-3,7-dione;2-(9,10-dioxo-9,10-dihydro-[1]anthryl)-2
H-dibenzo[
de,h]cinnoline-3,7-dione;2-(9,10-Dioxo-9,10-dihydro-[1]anthryl)-2
H-dibenzo[
de,h]cinnolin-3,7-dion;2-
-3,7-dioxo-2,3-dihydro-7H-dibenzocinnolin