1. Department
of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
2. Organic
and Biological Mass Spectrometry Group, Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
3. Mycosynthetix, Inc., 505 Meadowlands
Drive, Suite 103, Hillsborough, North Carolina 27278, United States