1. Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
2. Molecular and Applied Mycology and Plant Pathology Laboratory, Centre of Advanced Study, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
3. Department of Chemistry, Dukhulal Nibaran Chandra (D.N.C.) College, Aurangabad, West Bengal 742201, India