1. Research Center for Applied Science and Technology (RECAST), Tribhuvan University, Kirtipur, 44600 Kathmandu, Nepal
2. Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via F. Marzolo 5, 35131 Padova, Italy
3. Central Department of Chemistry, Tribhuvan University, Kirtipur, 44600 Kathmandu, Nepal