1. School of Chemical Sciences and Advanced Materials Research Centre, Indian Institute of Technology Mandi, H.P.-175075, India
2. Department of Nuclear Magnetic Resonance (NMR), All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi 110029, India
3. Institute of Nuclear Medicine and Allied Sciences (INMAS), Defence Research and Development Organization (DRDO), Lucknow Road, Timarpur, New Delhi, India