Did you try run ride the FNIX generator and then over the containers?
I just entered, I try to explain how, sorry but I use a translator.
On the short side of the building there are stacked containers, next to the containers is a generator that goes up and down. You have to get on the generator when it is low, wait for it to get up (be careful not to fall, you have to move constantly) as soon as it is up jump on the containers, you see an open window on the top of the building. You have to jump down, you will lose a few points of health. I recommend that you leave a radio outside the building for the exit.
I destroyed the generator, 
ok it repawns
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