Disclosed are a novel aromatic enediyne derivative, an organic semiconductor thin film using the same, and an electronic device. This optimizes the use of the writeable area, whether a large number of small data files or a small number of large data files are being stored. A valve-opening solenoid coil drives the armature in a valve-opening direction. The calming image may be applied to first and second panels of cloth that are stitched together, in registration, at a seam. The opposite end of the stay cable anchors at earth.