1. CSIR-North East Institute of Science & Technology, Natural Products Chemistry Division, Jorhat-785006, Assam, India
2. Nano Bio Systems Science, IIT Jodhpur, Rajasthan, India
3. National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Japan
4. Department of Neurobiology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8577, Japan