Disclosed is a daidzein derivative as represented by formula, or pharmaceutically acceptable salt thereof. An oscillation control circuit compares each of the signal levels of the first and second oscillation signals to a comparison voltage, and causes the signal level of the reference clock to transition according to results of the comparison. The NIC is connected to the south bridge chip and the BMC and is to receive a remote update data to determine the destination of the remote update data. The lance extends from the front push plate surface and has a barb, which defines a barb surface, adjacent a distal end. The inverse polarity magnets are polarized in a direction opposed to the direction of the main field pole magnet. for 5 seconds to 3 minutes to prepare the optically anisotropic cellulose ester film.