Automatic annotation of data recorded by a device. In one aspect, the present invention relates to a floral easel for holding andor supporting a floral object. Synchronization information is transmitted at a respective first frequency channel in each of the groups of frequency channels during a first sampling time period. The distance is obtained with respect to a reflection measurement of a light beam at a wavelength other than the selected wavelength such that the reflection measurement is minimized. The invention furthermore discloses an application of the device for supporting a human body in a working system. The novel oleamide derivatives of the present invention can be used not only as research reagents, but also in a wide industrial field because they exhibit useful bioactivities such as cancer metastasisgrowth inhibition.