In February 2007, the fourth and last satellite of the BeiDou-1 system, BeiDou-1D (sometimes called BeiDou-2A, serving as a backup satellite), was sent up into space. It was reported that the satellite had suffered from a control system malfunction but was then fully restored.
What is the official name of the fifth BeiDou-2 satellite?
{'text': 'BeiDou-1D', 'answer_start': 72}