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Literature cited
I. P. Kovalev and V. I. Litvinenko, Khim. Prirodn. Soedin., 233 (1965).
V. I. Litvinenko and N. P. Maksyutina, Khim. Prirodn. Soedin., 420 (1965).
Additional information
Khar'kov Pharmaceutical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 5, p. 673, September–October, 1973.