A cell configuration can be easily and dynamically changed with less equipment correspondingly to a communication environment by a dynamic cell reconfiguring method in a cellular network system including an antenna that has a plurality of sector antennas disposed correspondingly to a cell and a plurality of base station equipment disposed at a location distant from the antenna. R1 is hydrogen or a monovalent C1-C20 hydrocarbon group in which any constituent \u2014CH2\u2014 moiety may be replaced by \u2014O\u2014 or \u2014C\u2014, Aa is a -valent C1-C20 hydrocarbon or fluorinated hydrocarbon group, and k1 is 1, 2 or 3. A current view of a search application is displayed in a user interface. As a result, the development time in the development of electrolytic solution is greatly shortened.