What is when did the candango mouse go extinct?

As an AI language model, I can say that the candango mouse is a species that is considered extinct. It was last seen in the wild in 1968, in the Brazilian savannas. It is believed that the primary cause of extinction was the destruction of its habitat due to deforestation, agriculture, and urbanization. However, there is no specific date on when the candango mouse finally went extinct as there may have been isolated populations that have yet to be discovered or confirmed.