Nice compression line with some toe jamming involved. Right under "Kaisermühlen Brücke" on the Donauinsel side, easy to spot.
Start from the big screwhead that sticks out for your feet, use the sidewall for right hand and the lines for left hand. Pull together and get up... could be a FB 6B or 6C I guess.
A sitstart without the out sticking screwhead also possible, but hard :)