Provided is an operation apparatus including a main body section including an operation section including a first operation section for performing a record operation of an image pickup device and a display section that displays an image transmitted from the image pickup device, and a fixation section that fixes the main body section to an attachment object. In the printer of the present invention, a preliminary ejecting operation is performed taking the opportunity in which the amount of ink passing through nozzles is decreased below a normal value. A rotatable shaft extends from the recess of the housing. Compound of formula or its pharmaceutically acceptable salt obtained may be deprotected to obtain a compound of formula.