The invention provides novel compounds that are quaternary amine derivatives of betulin and other triterpenes. Thus, Joule heat is generated at the contact portion between the bottom of the outer case 16 of the unit cell 10a and the positive polarity terminal 18 of the unit cell 10b so that the contact portion melts. In order to connect the terminal to a contact, aboard 1 is arranged so that the hole area of the board body is fit over the receiving portion of a receiving die. A user interacting with a game console can select the tagged images. The elastic member is mounted around the pivot of the second wrench body, and prop between the first grip of the first wrench body and the second grip of the second wrench body, for providing an elastic resistance that holds the first and second wrench bodies in position. The air pump and controller are inside the encasement structure, the solar panel and encasement structure are mounted several feet above the ground surface, and the conduit between the pump and the diffuser is held inside the mounting pole.