PROBLEM TO BE SOLVED: To provide a bifunctional compound which is useful for degrading and inhibiting an androgen receptor. A compound exemplified by the following formula (Example 1). [Selection diagram] Figure 1【課題】アンドロゲン受容体を分解及び阻害するために有用である二機能性化合物の提供。【解決手段】下記式(例1)で例示される化合物。【選択図】図1