1. Smithsonian Marine Station; 701 Seaway Drive Fort Pierce Florida 34949 USA
2. Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Shenzhen Graduate School of Peking University; Shenzhen 518055 P.R. China
3. Department of Medicinal Chemistry and Center for Natural Products; Drug Discovery and Development (CNPD3); University of Florida; Gainesville Florida 32610 USA
4. Department of Pathology, Immunology and Laboratory Medicine; University of Florida; Gainesville Florida 32610 USA
5. Department of Chemistry; Texas A & M University; College Station Texas 77843 USA