Look at a score? It's a novel idea but, since I happen to have a set of etudes-tableaux lying about the place ... I believe that I've located the bar to which you refer but it isn't the 10th from the end ... by my count it's the 17th (unless my edition is very different from yours).In the hand span thread you seemed to say that you can stretch a 10th. My own span is similar and I can just about play that chord as such with my right hand but I'm not sure I would trust it at speed and I certainly would have a hard time voicing the accent on the low F. At this point there are 3 parts; the bass, the descending triplets in the middle part and the accompanying chords in the treble. If you can't play them all at once one of them will have to be delayed. If you asked me to pick one to delay it would be the top chord, which is the only one that doesn't have an accent. Which leaves you putting down the F with your thumb and then fitting in the chord with the fingers as best you can.