Disclosed herein are methods for synthesizing N–N–N\u2032-phenylmethyl)carbamide. The interconnection means is independent of the soleplate and preferably comprises a printed circuit and an optical fiber included in the printed circuit. A testing procedure of given hardware features of the data processing system is conducted, and all the features that are characteristic of the data and of the system are stored in a control file of the recovery program. A compression support plate protruding portion is inserted in and coupled to the sheet panel insertion portion.