Honestly, it's too fast to do anything except IBing whatever move came before and 360A/720ing him out of it.
Otherwise, IB the 3C, and if he's magnetized (or too close), 720.
If he isn't magnetized, you can still IB it and try to apply some form of counter pressure with 5A or 5C. But mAc will always press 5D when he sees that his 3C was blocked, so just walk up and grab him.