1. School of Chemistry and Biochemistry and ‡School of Biological Sciences,
Aquatic Chemical Ecology Center, Institute for Bioengineering and
Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
2. Department of Dermatology, ⊥Center for the Study of Human Health, and ∥Antibiotic Resistance
Center, Emory University, Atlanta, Georgia 30322, United States