Cocaine, its a shoe-in. Nothing else would fool anyone who had tried cocaine before. The closest thing overall, i think, is dimethocaine, which has 1/3 the stimulant potency and a similar anesthetic property and it's legal in Europe
Even if there was something that could be made and you could call it by its real name, if it works, and it's like coke, id like to try it..
I think everyone would