The title of this thread is a bit misleading, as the question doesn't relate to Chopin's ornaments generally.
I don’t quite understand why, of the myriad technical challenges in this piece, this particular figure would pose a distinct problem, or why it would be accorded attention and treatment different from any other polyrhythm.
Nonetheless, I’m uploading a picture for the benefit of those who don’t have a score at hand with measure numbers and would be disinclined to count up to 603.