1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, P.R. China
2. School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, P.R. China
3. Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
4. BioTools, Inc., 17546 Beeline Highway, Jupiter, Florida 33458, United States