2,5-Hexandion-2(E),5(E)-bis(O-methyloxim)

3,4-二氢-2H-吡喃

3,3,11,11-tetramethyl-1,2,4,9,10,12-hexaoxadispiro[4.2.48.25]tetradecane

4-propan-2-ylidenecyclohexan-1-one

3,6-dioxo-cyclohexane-1,2-dicarbonitrile