What is the dubstep track they used in the new transformers trailer?

In the new transformers 3 trailer, they use a sort of dubstep track. not the whole HD on youtube trailer. its the one they show on t.v. I think its shorter than the original trailer and doesn't show as many scenes. But there is a dubstep track behind it and i was wondering if someone could find it or how i could download it|||It is Machine Gun (16bit remix)|||Could the 16 bit or maybe Skrillex-Scatta, maybe edited a little by the director. The drops that are similar to the trailer at 0:41|||It's excision