I've not heard of "CVTF TC". It could be a case of different names around the world, not sure. My (North American) Owner's Manual says, in section "6-1. Specifications": Note the caution at the end. Do you have a Toyota dealership nearby? Where in the world are you? And: what does your Owner's Manual say?
You should drain and refill with the correct fluid as soon as possible. Among other things, the oil lubricates and cools not just the transmission gearing, but also two electrical motor/generator units. I am not expert, but it is possible that the wrong fluid could have electrically conductive properties which could damage those units. If you put the CVTF-TC fluid in your Prius transmission, get it out.
It's not clear yet if OP's done a refill with this fluid. Actually, a LOT of stuff is not clear, lol. FWIW, there's a number of owners here who have put in alternative fluids. I totally disagree with the practice, just on the simple premise: it may be ok, but why oh why do this, in light of the clear warning by Toyota?? This is just one more reason why I don't like buying pre-owned vehicles.
