spiro[9a,9b-dihydro-3aH-furo[1,2]pyrrolo[3,5-b]pyridazine-4,3'-oxolane]-1,2',3,5'-tetrone

(Z)-4-(2-methylpropylamino)-4-oxobut-2-enoic acid

4-氧代-1,2,3,4-四氢萘-2-羧酸

1-(4-dodecylphenyl)pyrrole-2,5-dione

dimethyl 2-benzylidenebutanedioate