The present invention relates to the novel benzofuran derivatives, the preparation thereof and the composition comprising the same. Design for manufacturability, or DFM, is an integration of DFM advisories; a DFM data kit presented in a DFM unified format; and DFM utilities utilizing the DFM data kit and the DFM advisories for enhancing integrated circuit designing. Each of the decks includes a load-bearing skin made of a reinforced thermoplastics material, a grid of reinforcing slats, a cellular core made of a thermoplastics material, and a tine-engaging skin made of a reinforced thermoplastics material. An oxime ester compound is represented by the following general formula, a photopolymerization initiator containing the same, and a photosensitive composition containing the photopolymerization initiator and a polymerizable compound having an ethylenically unsaturated bond:R1 and R2 each represent R11, COR11, CONR12R13, CN, etc.