The invention encompasses processes for the synthesis of –3- -5-methylhexanoic acid, -Pregabalin, and intermediates of -Pregabalin. When it is determined that only ONOFF signals of operational commands and operation modes have been transmitted, the devices disposed inside the outdoor unit are independently controlled based on the ONOFF signals. The base of the scoop strainer has a straight front edge and a planar front face which extends downward and inward from the front edge in a rectangular shape. The structure layer includes multiple structures formed of a first medium and a layer formed of a second medium having a refractive index different from a refractive index of the first medium.