1. a Institute of Life Sciences , University of Hyderabad Campus , Hyderabad , India
2. b Department of Chemistry , K. L. University, Vaddeswaram , Guntur , Andhra Pradesh , India
3. c Custom Pharmaceutical Services , Dr. Reddy's Laboratories Limited , Bollaram Road Miyapur, Hyderabad , India
4. d Department of Chemistry , National Institute of Technology , Warangal , Andhra Pradesh , India
5. e Department of Chemistry , Krishna University , Machilipatnam , Andhra Pradesh , India