Affiliation: | a Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC b Department of Chemistry, National Central University, Jhongli 32001, Taiwan, ROC c Department of Biology, The Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA d Agricultural Biotechnology Research Center, Academia Sinica, Taipei 11529, Taiwan, ROC |