1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, The Chinese Academy of Sciences, Kunming 650204, Yunnan, People's Republic of China; Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, The Chinese Academy of Sciences, Guangzhou 510301, Guangdong, People's Republic of China; and Laboratory of Insect Toxicology, South China Agricultural University, Guangzhou 510642, Guangdong, People's Republic of China