Can I develop ancient ektachrome?

I've acquired some Ektachrome 7252, which I gather is from the 70s. I was told it was refrigerated, but I have no way to confirm that. I know it's important to get exposure right on reversal, and I'm sure it's super slow. But I've also read that 7252 was meant for a different the development chemistry than what's normal now?

Is it still possible to get an image from this stuff? Maybe I should have it processed as negative? Any idea what speed I should shoot at? Or should I just give up hope on this ancient film?