Coolant Types

So I want to do a coolant flush on a 2009 Triumph Sprint ST 1050. The Google says to use Triumph D2053 OAT. I've had a bit of a time trying to track it down locally. I'm just wondering if there is an equivalent I could use or does it 100% need to be that stuff? I'll order it if I have to but I'd prefer to do it sooner than later. Thanks for the help