Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone, Maleic anhydride cyclic dimer, Cyclobutanetetracarboxylic Dianhydride, 1,2,3,4-CYCLOBUTANETETRACARBOXYLIC DIANHYDRIDE, Maleic anhydride cyclic dimer., Cyclobutane-1,2,3,4-Tetracarboxylicdianhydride, 1,2,3,4-cyclobutantetracarboxylic acid dianhydride, 1,2,3,4-cyclobutanetetracarboxylic acid dianhydride, Cyclobutanetetracarboxylic acid dianhydride, Cyclobutane-1,2,3,4-tetracarboxylic