endo-7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid

(内,内)-7-氧杂双环(2.2.1)庚-5-烯-2,3-二甲酸

dimethyl 7-oxabicyclo[2.2.1]hept-2-ene-2,3-dicarboxylate

7-oxabicyclo[2.2.1]hept-2-ene-2,3-dicarboxylic acid

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