Disclosed are novel chalcone derivatives having the formula . Also provided are the seeds of soybean variety XB008G11, cells from soybean variety XB008G11, plants of soybean XB008G11, and plant parts of soybean variety XB008G11. The estimated second phase angle is then added to the calculated angle variation so as to form an output current phase angle reference, and an output current phase angle of the generator system is controlled to be aligned with the output current phase angle reference. A side portion of the power-transmitting member is disposed on a peripheral portion of the upper surface adjacent to the side surface and a light-exiting surface of the point light sources facing the side surface to be adjacent to the side surface. Vias may pass, either directly or by dog legs on interior surfaces, completely through the bottom LIMMS device layer, and through other device layers as needed.