This needs NO straightening. This is photography after all. I figure if you had wanted it perfectly, boringly (is that a word?) straight, you'd have hit it head on. It's fine as is.
Yes, as Marjo says, the near mathematical precision of this piece makes it especially interesting. This would be a gem with just a touch of straightening. (and I know, not as easy to do as to say)
Interesting abstract. Nice tones/levels throughout. A slight perspective or skew to straighten the top L/H to make it symmetrical is the only thing I see needed.