* Energy stocks could come under pressure as oil prices fell towards six-year lows after data showed Japan’s economy contracted and U.S. producers added drilling rigs for a fourth straight week despite a recent rout in prices. * With the U.S. earnings season at the flag end and no major economic data due, investors will turn to Wednesday’s minutes of the most recent Federal Reserve meeting for indications on how the U.S. central bank will react to the recent yuan devaluation and the further decline in oil prices.