3,4,7,8-tetrahydrocyclobuta[b]naphthalene-1,2-dione InChI=1/C12H10O2/c13-11-9-5-7-3-1-2-4-8(7)6-10(9)12(11)14/h1-2H,3-6H cyclobuta[b]naphthalene-1,2-dione, 3,4,7,8-tetrahydro-