dimethyl 7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate
(1S,3S,4R)-7-Oxa-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid
dimethyl 7-oxabicyclo<2.2.1>heptane-2β,3β-dicarboxylate
cis-endo-2,3-(biscarbomethoxy)-7-oxabicyclo<2.2.1>heptane
(2-endo,3-exo)-7-oxabicyclo<2.2.1>hept-5-ene-2,3-bis(carbonyl chloride)