2-(1,4-dioxonaphthalen-2-yl)naphthalene-1,4-dione

8-hydroxydinaphtho[1,2-b:2',1'-d]furan-5,6-quinone

2-butanoyl-1,4-dihydroxynaphthalene

exo tetracyclo<10.2.1.02,11.04,9>pentadeca-4,5,7,13-tetraene-3,10-dione