An information storage device which has a layer containing such bistable molecules that the molecular structure reversibly changes due to an isomerization reaction, at least one reaction of the isomerization reaction is caused by electric carrier injection, and the electric characteristics change as between before and after the isomerization reaction. The present invention also relates to compositions comprising at least one Fused Tetracycle Derivative, and methods of using the Fused Tetracycle Derivatives for treating or preventing HCV infection in a patient. The brace includes at least one aperture into which a firework-holding tube is received. The retrieve mode includes a constant time retrieve, a constant speed retrieve, and an accelerating and decelerating retrieve.