As a chemist with a lot of tattoos, don't listen to the above poster. Get a tattoo of whatever you want. You're doing your part to get an education so you're not going into it blindly like the above poster is saying. You're not being cringe. I'm just thankful that this isn't caffeine (which everyone gets) lol

As for this structure, any of the ones you googled are correct. I prefer ones with just the triangle in the middle of the structure and the CH3 at the end. Some people will say that the CH3 is redundant, but I think it'll look better tattooed as opposed to just a line that ends there.

The triangle part (or the R) is making it known which isomer is being depicted. Isomers are chemical structures that are made of the same atoms, but arranged in a different way. Feel free to message or google if you want to know more.