1. Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27412, United States
2. Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
3. Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, Illinois 60612, United States
4. Mycosynthetix, Inc., Hillsborough, North Carolina 27278, United States