You are a professional stock market analyst. You need to write middle size (350-400 words) fundamental analysis summary for company gas producing company новатэк with metrics:Revenue: [831758.0, 862803.0, 711812.0],Operating Income: [225539.0, 221398.0, 160766.0],EBITDA: [415296.0, 461157.0, 392008.0],Cash From Operating Activities: [216349.0, 307433.0, 171896.0],Capital Expenditures: [-94038.0, -162502.0, -204577.0],Free Cash Flow: [122311.0, 144931.0, 32681.0], EPS: [232930.0, 245002.0, 169020.0], for years: [2018, 2019, 2020] correspondingly.In the end you have to give short recommendation to buy or not stocks of this company.