双环[2.2.1]庚-5-烯-2,3-二甲酸

5-降冰片烯-2,3-二甲酰亚胺

5-庚烯-2,3-二羧酸单甲酯

2-(5-nitro-thiazol-2-yl)-3a,4,7,7a-tetrahydro-4,7-methano-isoindole-1,3-dione

Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid,dimethyl ester,(endo,endo)