dimethyl (1R,4S,4aS,5S,9S,9aR)-6-(dicyanomethylene)-4,4a,5,6,9,9a-hexahydro-1H-1,4-epoxy-5,9-ethenobenzo[7]annulene-2,3-dicarboxylate

甲醇

methyl 11-oxa-endo,endo-tetracyclo<6.2.1.13,6.02,7>dodec-9-ene-9,10-dicarboxylate

dimethyl (1R,4S,4aS,5S,9R)-5-hydroxy-6-oxo-4,4a,5,6,9,9a-hexahydro-1H-1,4-epoxy-5,9-ethenobenzo[7]annulene-2,3-dicarboxylate

3,4-呋喃二羰基二氯化物