1. Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
2. School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata, Jadavpur 700032, India
3. Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
4. School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
5. Center for Structural Biology, Vanderbilt University, Nashville, Tennessee 37232, United States