3A,3b,6a,6b-tetramethylcyclobuta[1,2-c:3,4-c']difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone

(The order shall be subject to the English name)

English alias：3a,3b,6a,6b-tetramethyltetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone; 1,2,3,4-Tetramethyl-1,2,3,4-cyclobutanetetracarboxylic Dianhydride; 1,2,3,4-Tetramethylcyclobutane-1,2,3,4-tetracarboxylic acid dianhydride; Tetramethylcyclobutan-tetracarbonsaeure-dianhydrid; 1,2,3,4-Tetramethylcyclobutan-1,2,3,4-tetracarbonsaeure-dianhydrid; 4022P;
CAS：64198-16-9 Molecular formula：C₁₂H₁₂O₆ Molecular weight：252.22