It's the proposed cockpit layout for the Su-35UB, a programme that is now probably abandoned.
http://mysite.wanadoo-members.co.uk/flankers_pages/su-35ub.htm
The Su-27SM cockpit looks much like that of a Chinese Su-30MKK, with a small additional MFD between the two large main screens:
http://forum.keypublishing.co.uk/attachment.php?attachmentid=54256