Most clearcoats are an acrylic polymer. I'm not sure of the exact composition of the ST factory paint, but I have used lacquer thinner to dissolve adhesive on mine.
I am an ex auto body painter and recently repainted my rear bumper and didn't notice a masking tape error and over spray got on my tailgate, Laquer thinner took it right off, and did not phase the clear coat. With that said, I worked fast and used high quality cotton towels. I came in behind that with wax and grease remover. Then soapy water, then re-waxed.
Sorry, Dingo is on the mark. Lacquer thinner won't touch FACTORY clearcoat unless you rub it till you finish a six pack. I have 25+ years in autobody repair. All body shops use it for a fast cleanup. But I would take it to a shop to get it done. First off, you'll have a hard time finding paint grade thinner, and if you do, you'll probably have to buy a gallon. It's expensive and you probably only need a pint. And it's better off in the hands of someone who knows how to use it.
I would recommend that you go to a local body or paint shop, tell them the problem and they can probably tell the best way to get it off if it is even possible.