1. Research Institute of Natural Products for Drug Discovery (RiND), Faculty of Pharmacy, Universiti Teknologi MARA, Campus Puncak Alam, 42300 Bandar Puncak Alam, Selangor D. E.Malaysia and Jeffrey Cheah School of Medicine and Health Sciences, Monash University Sunway Campus, Building 3, Jalan Lagoon Selatan, Bandar Sunway, 46150, Selangor D. E.Malaysia,