The present invention discloses cephalomannine derivatives of general formula, a process for preparation of such cephalomannine derivatives, a composition containing such compounds, and use of said compounds in the manufacture of a medicament for the treatment of tumors, especially multidrug resistant tumors. Therefore, when video and audio data are not multiplexed or when there is a scene description for handling plural pieces of video data, the video and audio data can be recorded or transmitted in like manner as multiplexed data. The charge pump circuit may utilize multiple supply voltages, with a higher supply voltage such as a 3. The method includes updating the debug status register with hardware status flags arising from running the hardware debugger and software status flags arising from running the debug software. The invention further relates to hybrid soybean seeds, plants and plant parts produced by crossing the cultivar S050227 with another soybean cultivar. A cabling means is coupled to the energy delivery device means.