1. Niigata
Research
Laboratory, Mitsubishi Gas Chemical Co., Inc., 182 Tayuhama, Shinwari, Kita-ku, Niigata 950-3112, Japan
2. Research Cluster
for Innovation, Nakamura Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
3. Computational Chemistry
Applications Unit, Advanced Center for Computing and Communication, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
4. Department
of Biological Information, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan