1. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
2. Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310-4005, United States
3. Analytical Research & Development, BioTherapeutics Pharmaceutical Sciences, Pfizer, Inc., One Burtt Road, Andover, Massachusetts 01810, United States