1. Department
of Chemistry, BioScience Research Collaborative, and Department of
Chemical and Biomolecular Engineering, Rice University, 6100 Main
Street, Houston, Texas 77005, United States
2. Stemcentrx Inc., 450 East Jamie
Court, South San Francisco, California 94080, United States
3. Laboratory of Chemical Biology of Natural Products & Designed Molecules, National Centre of Scientific Research “Demokritos”, Agia Paraskevi-Athens GR-15310, Greece