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Khaliullin, F.A., Shabalina, Y.V., Davlyatova, G.G., Valeeva, L.A. SYNTHESIS AND ANTIDEPRESSANT PROPERTIES OF 3-METHYL-7-(1,1-DIOXOTHIETAN-3-YL)-8-CYCLOHEXYLAMINO-1-ETHYL-1H-PURINE-2,6(3H,7H)-DIONE // 2018