双环[2.2.2]辛烷-1,4-二羧酸二甲酯

2,5-二氧代双环[2.2.2]辛烷-1,4-二羧酸二甲酯

2,5-二甲氧酰基-1,4-环己二酮

dimethyl 1'H,4'H-dispiro[1,3-dithiolane-2,2'-bicyclo[2.2.2]octane-5',2''-[1,3]dithiolane]-1',4'-dicarboxylate

1,4-环己二甲酸二甲酯