You know how those caffiene shirts have a diagram of the chemical formula?
You could make a mock up of a diagram for C@FPOW!!! and just throw whatever into it. Like have your Carbons, and Oxygens, and Hydrogens, but then just for kicks, throw in some Uranium, Einsteinium, Retrograde DNA (Not shown at atomic level), Etc. For that matter, throw in some made up elements, such as Er = Energium. With how heavily energy drinks nowadays advertise caffiene, taurine, and creatine, (in micro-trace amounts only), this just makes perfect sense. Little things added; something that you wouldn't really notice unless you had some general knowledge in chemistry. . . Just for some injokes.
And besides, it's probably pretty accurate, all things considered. . .