A hydroxysafflor yellow A sodium compound as shown in a formula and preparation as well as medicinal application thereof are provided. Each yoke is pivotable with respect to the frame by the extension and retraction of a hydraulic cylinder. The bolts may be installed from above by use of a tool that is inserted into the space between the sidewalls. When reproducing the interrupted main file, the digest file corresponding to the respective chapters before the interruption is reproduced before the main file interrupted is reproduced. A second stake is inserted into a second base hole and the tape is extended between the bases. The eccentric brakes deploy when either there is a hoist cable break, an overspeed condition, or an incline elevator power failure.