1. Division of Organic Chemistry, National Institute of Health Sciences, Kanagawa 210-9501, Japan
2. Graduate School of Medical Life Science, Yokohama City University, Kanagawa 236-0027, Japan
3. Division of Molecular Target and Gene Therapy Products, National Institute of Health Sciences, Kanagawa 210-9501, Japan
4. Laboratory of Targeted Protein Degradation, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 110-0033, Japan