1. NASA Ames Research Center, Mountain View, CA, USA
2. Bay Area Environmental Research Institute, Mountain View, CA, USA
3. SETI Institute, Mountain View, CA, USA
4. Department of Chemistry & Biochemistry, University of Mississippi, University, MS, USA
5. Center for Computational Quantum Chemistry, University of Georgia, Athens, GA, USA
6. Department of Chemistry, University of California, Berkeley, CA, USA
7. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA