PROBLEM TO BE SOLVED: To provide a compound for the treatment or prevention of non-cancerous, benign brain tumors.SOLUTION: This invention relates to a compound represented by formula (II), or N-oxide thereof, or pharmacologically acceptable salt thereof.【課題】非癌性、良性脳腫瘍の処置又は、予防的のための化合物の提供。【解決手段】次式(II)で示される化合物、又はそのN-オキシド、又は薬学的に許容される塩。【選択図】なし