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参考文献
Voronkov,M.G. et al. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1977 , vol. 13, # 11 p. 1205 - 1207 Khimiya Geterotsiklicheskikh Soedinenii, 1977 , vol. 13, # 11 p. 1507 - 1509
Voronkov,M.G. et al. Chemistry of Heterocyclic Compounds (New York, NY, United States), 1977 , vol. 13, # 11 p. 1205 - 1207 Khimiya Geterotsiklicheskikh Soedinenii, 1977 , vol. 13, # 11 p. 1507 - 1509