5-氯甲基呋喃-2-甲醛

endo 1,7-dimethyl-3,5,10-trioxa-tricyclo[5.2.1.0(2,6)]dec-8-en-4-one

exo 1,7-dimethyl-3,5,10-trioxa-tricyclo[5.2.1.0(2,6)]dec-8-en-4-one

D-fructofuranose