4253-24-1
benzo[1,2-c:3,4-c':5,6-c'']trifuran-1,3,4,6,7,9-hexone
→
51799-36-1
penta-1,2,3,4-tetraene-1,5-dione
+
63615-05-4
hepta-1,2,3,4,5,6-hexaene-1,7-dione