At the time of taking the shot, apart fro using a lower ISO, I would suggest you decide if you want to prioritise the sky, or the bulk of the buildings, which are quite a bit darker.
If I assume you want the buildings, I would add a +2/3 to +1 exposure compensation.
In processing, - apart from removing the cable which is quite simple, Ive made a couple of changes to the RAW adjustments that were in the exif.
I reset all the changes, so where whites were say +15, I set to -15, using ACR. With that done, I increased exposure by 0.95; and increased colour temp, - +15 and +2; this is largely a shade shot, so a higher temp will work better.
I lifted shadows and blacks a little, then open it in CS6.
I slightly darkened the upper area only, using curves, a layer mask and a grad filter. With exposure increased, noise was a little more visible, so a slight NR and sharpening. Added a small amount of colour sat.
Cable removal was a combination of the patch tool in content aware, strict mode, which worked well in the sky and on the left, and some close, careful cloning on the right.
Filled in a sliver of white bottom right from a rotation. Its a nice shot with the angles of the windows and the buildings.
I think it look decent, - how about you? Is this what you were looking for?