Compounds of formula I or pharmaceutically acceptable salts thereof: Formula wherein R1, R2, R3 and R8 are as defined in the specification as well as salts and pharmaceutical compositions including the compounds are prepared. As the rows are sequentially selected, the defective addresses of the ROM cell array are transferred to the latch block through the sense amplifier block by means of serial transfer. The carrier may include triterpenoid moieties, sugars, lipids, or even additional monoterpenoid moieties. Other costs that the client does not know are read from a local database storing costs known by other clients with similar profiles. The fixing mount extends from a side of a lower case of the stator portion.