1. Laboratory for Molecular Simulation (LSMO) Institute of Chemical Sciences and Engineering (ISIC) École Polytechnique Fédérale de Lausanne CH-1951 Sion Switzerland
2. Current address: Helen Scientific Research and Technological Development Co. Ltd Ho Chi Minh City Vietnam
3. Institute of Chemical Sciences and Engineering (ISIC) École Polytechnique Fédérale de Lausanne CH-1951 Sion Switzerland
4. Current address: Department of Chemistry Oregon State University Corvallis OR 97331 USA