The invention provides novel selective estrogen receptor modulator compounds of the general formula: . A lathe includes a spindle 2 that rotatably supports a workpiece and processing means 4 located in front of the spindle 2. A first coil wire is connected to the first commutator, and is wound on bottoms of the slots to form an inner coil. The coating has a surface energy lower than the surface energy of the photolithographic mask.