IUPAC:12-[2-(12-oxo-7,12-dihydro-1,4-diazatetraphen-7-ylidene)-1lambda3,2lambda3-dioxidan-1-ylidene]-7,12-dihydro-1,4-diazatetraphen-7-one
IUPAC:12-[2-(12-oxo-7,12-dihydro-1,4-diazatetraphen-7-ylidene)-1lambda3,2lambda3-dioxidan-1-ylidene]-7,12-dihydro-1,4-diazatetraphen-7-one