1. School
of Information Science, JAIST, Asahidai 1-1, Nomi, Ishikawa 923-1292, Japan
2. Department
of Chemistry, Princeton University, Princeton, New Jersey 08540, United States
3. Computational
Astrophysics Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
4. Department
of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States