The present invention is directed to an improved synthesis of clasto-lactacystin–lactone, and analogs thereof, that proceeds in fewer steps and in much greater overall yield than syntheses described in the prior art. The through holes are arranged at intervals along the longitudinal direction of the blades and are progressively smaller in diameter from the pivoting end toward the free end of the blades. The plate antenna has one feed terminal and six uniformly spaced ground terminals. As illustration, an OCR system for scanning checks is adapted to produce field recognition scores that reflect economic value. The application guard applies the distributed reversing delta to the currently enforced version to reconstruct the previously enforced version. The hinges are formed in a U-shaped arrangement, which does not compromise the material of the cushion, and thus allow the cushion arms to maintain strength and elastic properties.