1. Bio-Organic Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
2. Department of Chemistry, Kirori Mal College, University of Delhi, Delhi 110007, India
3. Department of Chemistry, L. N. M. S. College, Supaul, Birpur, Bihar 8543340, India
4. Department of Chemistry, IIT Patna, Bihar 801106, India