The invention relates to the bis-hydrochloride of 4,4\u2032-dithiobis- and the bis-trifluoracetate of 4,4\u2032-dithiobis-. The template consists of a design such as a heart, a letter of the alphabet, a symbol, or other design that, when the light is activated, shines the pattern onto the top of the tongue of the user. A current collector is secured adjacent a first end of the stack of fuel cell component plates and a pressure plate is secured adjacent to the current collector. Reflecting parts are provided on an upper surface side and a lower surface side of the protruding part, and a second light emitting part is provided at a leading end of the protruding part.