 Complete the following sentence: Viktor Leonidovich Demyanenko  born August 26, 1958 in Alma-Ata, Kazakh SSR is a retired boxer, who represented the USSR at the 1980 Summer Olympics in Moscow, Soviet Union. Ó jẹ agbábọọlù tó ti fẹyìn tì, tó sì ṣojú fún USSR ní ìdíje Òlíńpíìkì Ọdún 1980 ní Moscow, Soviet Union. O gba ami eye fadaka ni ẹka iwuwo kekere  60 kg, lẹhin ti o ṣẹgun ni ipari nipasẹ Ángel Herrera ti Cuba. Demyanenko gba ìdánilẹkọọ ní Dynamo ní Alma-Ata. Ó gba góòlù ní : Ìje Ẹyẹ Yúróòpù Ọdún 1979. Ní gbogbo ìgbà tí Demyanenko ti ń jagun, ó gba 267 nínú 290 ìjà. 